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Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: yvhanoi on January 18, 2005, 10:05:05 AM

Title: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 18, 2005, 10:05:05 AM
hello,

here is my home configuration:
1 desktop / WXP
1 labtop / WXP
1 linksys WAG54 gateway

all this used to work well together:
the 2 pcs dynamically get an IP address (192.168.1.x) from the DHCP  server of the gateway to sea eachother for file sharing and access the internet.

i have just downloaded AVAST! home on my labtop and installed it. as a result the network is down now on it:
cannot access the internet, cannot access the LAN.

in fact, the PC is no more able to found the DHCP server of the gateway, so an IP address 169.254.x.x is assigned by WXP IPAC  service.

I have installed AVAST! home with all the  default options,  no warning...

by now, the labtop is 1000% protected against viruses... but useless.

thanks for your help.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 18, 2005, 10:07:12 AM
forgot to say:
I have de-installed AVAST! and all is ok again.....
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Eddy on January 18, 2005, 10:12:01 AM
Very strange...... ???

It could have been a conflict with another application or a bad install.
Was there any other av on the system before Avast?
If so was it completely removed (including registry keys) before installing Avast?
Can you install Avast again and see if it happens again?
If it happens again check the system log, event log and Avast log file. It may tell us more about what is going on.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 18, 2005, 10:32:11 AM
this is a fresh installation of WXP, AVAST is the second program i have installed on it after mozilla firefox.

what i can see is that the installation of AVAST (successfull with the default options) prevent me to access to the DHCP server of the gateway (even an ipconfig/renew does not work...).

just de-installing AVAST makes all working again.

so my understanding is that this is only AVAST that causes the trouble...
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Eddy on January 18, 2005, 10:34:06 AM
I never have seen Avast blocking network access.
Not saying it can't happen, but it is very unlikely.
Since you connected to the net without all secrutiy patches installed and without av software, make sure your system isn't already infected with malware.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 18, 2005, 10:40:31 AM
how could the labtop be infected???
as i previously said, just only de-installed AVAST makes all working again: get a correct IP address, see the LAN, connect the internet...
or are you saying that my labtop was infected by AVAST?
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Eddy on January 18, 2005, 10:43:27 AM
Read my post again.

Quote
how could the labtop be infected?
You went online without proper protection and like also without ALL security patches/updates installed.

Quote
or are you saying that my labtop was infected by AVAST?
No I said with MALWARE.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 18, 2005, 10:59:33 AM
mmm...
i have reformated the disk yesterday and installed Windows XP
then get Firefox and Avast from my desktop (behind  gateway's firewall and auto protect by NAV)
then installed Firefox
then installed Avast
then cannot access neither LAN nor internet
then de-installed Avast
then able to access both LAN AND internet...
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: galooma on January 18, 2005, 11:13:11 AM
Was it the current build 4.5.561 installed?
was avast! able to update?
Did you try selectively shutting down providers ?
windows firewall off?
re-boot after installation?
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 18, 2005, 02:32:57 PM
Was it the current build 4.5.561 installed?
not sure. i have downloaded the kit yesterday.
was avast! able to update?
from the web? of course not...
Did you try selectively shutting down providers ?
what do you mean by "providers"?
windows firewall off?
yes of course, for file sharing on XP
re-boot after installation?
no

note that i am not currently at home.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Lisandro on January 18, 2005, 06:54:17 PM
Behind gateway's firewall and auto protect by NAV

What do you mean with NAV?
Did you install avast with NAV already installed?
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 24, 2005, 10:02:15 AM
I have tried again this week-end at home.

after having re-intalling AVAST (without restarting my labtop), my internet connection and LAN connection was OK.

then I restart my labtop and what I have seen is that AVAST is computing when I boot and connect on my Local Network preventing me to get an address from my gateway's DHCP server.

so is there a way to enable AVAST ONLY when i connect the internet and disable it at computer start up?

thanks.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: galooma on January 24, 2005, 10:32:22 AM
Hi and welcome back could you give us a log file generated from HJT as it will give us a list of what utilities you are running and system specs . You can download it here http://www.allsecpros.com/hjt.html there is also a tutorial at the site to read up on.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 24, 2005, 10:56:27 AM
ok thanks, i'll do this this evening when i am at home. stay tuned...
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: watchthisspace on January 24, 2005, 11:00:38 AM
Have you tried disabling the Network shield?
Go, Right click on the avast ball in the tast bar >>on-access protestion control>>Details (if it has less details leave it) >>Network shield>>Terminate>> no


Watchthisspace
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Lisandro on January 24, 2005, 03:46:05 PM
So is there a way to enable AVAST ONLY when i connect the internet and disable it at computer start up?

Two different connections... LAN and Internet.

You can delay the avast running on the logon. Not only the ashDisp.exe (the icon) but you have to manage the Windows services:
To this, you can try Startup Delayer (http://www.r2.com.au/software.php?page=2&show=startdelay) that controls the windows startup (Windows 98\Me\2k\XP) that does not follow a strict order.

Only when connected to the Internet?
Well, try NetRun. It will run a list of programs only when a internet connection is detected, and close/kill the same 'list' when the connection is lost. When I upgraded my machine to XP, the program that I was using stop working so I was forced to write this program.



You can download the Beta Version (1.2.1.3). It's stable and functional:
http://www.home.earthlink.net/~czarsoft/NetRunSetup.exe
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 24, 2005, 10:20:46 PM

below is the hjt log file before AVASt installation (all working fine):

Logfile of HijackThis v1.98.2
Scan saved at 21:38:27, on 24/01/2005
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\ctfmon.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\wuauclt.exe
C:\WINDOWS\System32\wpabaln.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\Owner\My Documents\New Folder\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.microsoft.com/isapi/redir.dll?prd={SUB_PRD}&clcid={SUB_CLSID}&pver={SUB_PVER}&ar=home
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O17 - HKLM\System\CCS\Services\Tcpip\..\{854FBA0D-1117-4818-9F1B-20D5C7FC7E4B}:


now is the hjt log file after AVASt installation and before restart computer (all still working fine):

Logfile of HijackThis v1.98.2
Scan saved at 21:50:19, on 24/01/2005
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\ctfmon.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\wuauclt.exe
C:\WINDOWS\System32\wpabaln.exe
C:\Documents and Settings\Owner\My Documents\New Folder\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.microsoft.com/isapi/redir.dll?prd={SUB_PRD}&clcid={SUB_CLSID}&pver={SUB_PVER}&ar=home
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O17 - HKLM\System\CCS\Services\Tcpip\..\{854FBA0D-1117-4818-9F1B-20D5C7FC7E4B}: NameServer = 192.168.1.1


in the end, below  is the hjt log file after restart computer (all going wrong now):

Logfile of HijackThis v1.98.2
Scan saved at 21:59:34, on 24/01/2005
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\WINDOWS\System32\ctfmon.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\WINDOWS\System32\wuauclt.exe
C:\WINDOWS\System32\wpabaln.exe
C:\WINDOWS\System32\cmd.exe
C:\Documents and Settings\Owner\My Documents\New Folder\HijackThis.exe

O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O17 - HKLM\System\CCS\Services\Tcpip\..\{854FBA0D-1117-4818-9F1B-20D5C7FC7E4B}: NameServer = 192.168.1.1


Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Eddy on January 25, 2005, 07:20:59 AM
With Avast installed, can you access the router form the troubled machine? (ip router = 192.168.1.1)
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 25, 2005, 09:19:05 AM
no i can't: ping 192.168.1.1 hangs...
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Eddy on January 25, 2005, 09:22:29 AM
Have you tried shutting down the Avast providers one at a time?
Is there anything in the system and/or event log?
Have you set a DNS server in the network connection options?

Are you using the latest firmware for the router?
Does giving the systems a static IP changes anything?
Have you tried resetting the router?

Edit: If you use HijackThis, please use the latest version. (Currently 1.99.0)
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: lukor on January 25, 2005, 12:09:43 PM
Hi,
could you please try to turn the "Network Shield" provider off? (Double click on the (a) icon, select Network Shield and choose terminate. (click Details .. >>>) if the list of providers is not visible.

Thanks.
Lukas.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 25, 2005, 02:17:03 PM
as stated by Watchthisspace , yesterday evening i have also tried to

Quote
Right click on the avast ball in the tast bar >>on-access protestion control>>Details (if it has less details leave it) >>Network shield>>Terminate>> no

without any visible effects...


Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 25, 2005, 02:25:15 PM
Eddy,

Quote

Have you tried shutting down the Avast providers one at a time?
i am not familiar with the notion of provider in AVAST!  what do you mean by the way?


Quote

Is there anything in the system and/or event log?

yes, i'll post it this evening when i am home.

Quote

Have you set a DNS server in the network connection options?

no.

Quote

Are you using the latest firmware for the router?

yes.

Quote

Does giving the systems a static IP changes anything?

not tried yet.

Quote

Have you tried resetting the router?

yes. without effect.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Lisandro on January 25, 2005, 02:45:32 PM
i am not familiar with the notion of provider in AVAST!  what do you mean by the way?

Resident Protection Providers

- Standard Shield. It checks the applications being run and documents being opened. It will not allow an infected application to start or an infected document to be opened, thus possibly protecting you, the user from activating/spreading a virus
- Outlook/Exchange. It checks incoming and outgoing e-mail messages processed by MS Outlook client (it is part of the MS Office package - it is not the same as the simpler Outlook Express!) or MS Exchange. It will refuse to accept or send a message containing a viral code
- Internet Mail. It checks incoming and outgoing e-mail messages processed by clients other than MS Outlook or Exchange, such as Outlook Express, Eudora etc. Again, it will refuse to accept or send a message containing a viral code
- Instant Messaging. It checks the files downloaded by common communication programs, such as ICQ or MSN Messenger
- P2P Shield. It checks the files downloaded by common P2P (file sharing) programs, such as Kazaa and others
- P2P Shield. It checks the files downloaded by common P2P (file sharing) programs, such as Kazaa and others
- Network Shield It is meant as a protection against known Internet worms/attacks. It analyses all network traffic and scans it for malicious contents. It can be also taken as a lightweight firewall (or more precisely, an IDS (Intrusion Detection System).

Profession Edition includes also:
- Script blocking. It checks scripts contained in the web pages you look at, thus avoiding infection due to potential bugs in your web browser

Next version of avast will have:
- Web Shield provider: It is a proxy that filters the communication of a web browser, looking for viruses. It also makes it possible to block certain files by URL or MIME type. HTTP Scanner should deal with all network traffic such as spywares, adwares, toolbars, BHOs, hijackers and other malicious scripts. It will work as a real time network-based antivirus firewall, it will filter HTTP (web) traffic before it reaches the browser.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 25, 2005, 10:03:58 PM
to answer all the remaining questions:

- set a static ip @ did not solve the problem

- i have performed a custom installation without "network shield" = same problem

below are the event when the labtop boots with AVAST installed (but i think it's clueless):

AMLI: ACPI BIOS is attempting to write to an illegal IO port address (0x74), which lies in the 0x74 - 0x76 protected address range. This could lead to system instability. Please contact your system vendor for technical assistance.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

then:


Your computer has automatically configured the IP address for the Network Card with network address 000F6672F611.  The IP address being used is 169.254.161.13.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.


i think i will give up with AVAST, my goal was just to get off NAV... thinking about try some other software................
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: galooma on January 25, 2005, 10:09:23 PM
Are you confident that all traces of NAV were removed prior to installing Avast.
 Problems such as yours are typical of incomplete removal of previous a/v.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 25, 2005, 10:22:52 PM
NAV has never been installed on my labtop, only on my desktop.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: angel74 on January 26, 2005, 12:44:57 AM
ok, i understood the origanal msg, but not after. all i can say is that after insalling avast, my dialup keeps on saying that my modem isnt working.......
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: DavidR on January 26, 2005, 12:52:14 AM
avast isn't saying your modem isn't working, that is more likely to be the windows dialler process. As you mentioned in another post in the off-topic forum you have recently installed a firewall as well, this is more likely to be the problem.

It is probably best to stick with the off-topic thread and expand on the information.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Lisandro on January 26, 2005, 02:05:48 AM
My dialup keeps on saying that my modem isnt working...

Make sure your browser is not set to "Work Offline" (this option is generally in the File menu). If it doesn't help, try switching the proxy settings from "Auto-detect" to "No proxy" (I'm assuming you're not connecting to the Internet via proxy).

Left click the avast icon > Settings
Update (Basic) > Details > Proxy
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: yvhanoi on January 26, 2005, 09:18:14 AM
another precision:

i have also tried to set up Startup Delayer to defer AVAST when restarting the laptop (120s).
what i have seen so far is that before AVAST is running, i already get a dummy IP @.
so my assumption is that the problem is not AVAST running but AVAST installation itself.
does anybody what is done at installation time (registry update...) ?
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Lisandro on January 26, 2005, 11:35:59 AM
So my assumption is that the problem is not AVAST running but AVAST installation itself.
does anybody what is done at installation time (registry update...) ?

Very strange... avast does not change IP address, does it?
avast can't interfere at this point...
I suppose that you already repaired your installation (Control Panel > Add/Remove programs > avast! antivirus > Remove
Then choose Repair function in the popup window)...
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Eddy on January 26, 2005, 03:53:14 PM
I've seen it twice in that the router software didn't work with a certain application. Very rare, but it did happen.
Heva you already contacted the manufacturer to see what they say about this?
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: whenever on March 05, 2005, 04:50:21 PM
I have the same problem with yvhanoi.

When avast disabled, the wireless connection is OK.

When avast enabled, it is very difficult to connect to the wireless router although it shows a wireless network is in range. Sometimes it can connect after I plug in and out the PCMCIA Card many times.

It seems there is a conflict between avast and linksys driver, because when avast enabled, the STATE in the attached pic shows:
"Can not communicate with device driver."
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Lisandro on March 05, 2005, 07:43:16 PM
Whenever, welcome, if you don't mind the off topic, I could not resist:
Which program did you use to 'shred' the screen shot above?
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: DavidR on March 05, 2005, 07:55:36 PM
I'm trying the SnagIt trial version, it looks a litle like that, but probably not.
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: whenever on March 06, 2005, 08:28:00 AM
Whenever, welcome, if you don't mind the off topic, I could not resist:
Which program did you use to 'shred' the screen shot above?
I am using SPX Instant Screen Capture. Very easy and handy.
http://www.moodysoft.com/spx/
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: Lisandro on March 06, 2005, 04:20:14 PM
Thanks whenever. Unfortunatelly, it's not a freeware  :'(
Title: Re: after avast home installation: cannot acces neither internet nor LAN
Post by: DavidR on March 06, 2005, 06:09:55 PM
Thanks whenever. Unfortunately, it's not a freeware :'(
That's right neither are freeware, but it does save a lot of time, rather than capture an image and then have to edit it using a graphics editor.

I too liked the ScreenPrint32 (freeware) that you recommended to me some time ago, it is limited in what it can do. Having used SnadIt for just over a week, the cost Vs convenience is in favour of a one off payment.

When I complete my 30 day trial, I will try the SPX Instant Screen Capture and decide which to go for. The SPX is a little less costly, but I think that SnagIt has a few options not available in SPX, the decision is are they worth the extra cost.