Hi everyone.
When I installed the trial version of Avast 5 Internet Security,
I had to restart my computer, so I clicked Restart.
When I logged back in, my computer was behaving weird.
No sound, no other programs running, I only saw the avast! icon in the down-right corner of the screen.
Also, the task bar crashed at startup and was only reacting some minutes after it.
So I pressed Ctrl + Alt + Delete to open Task Manager, and I saw there was only about 250 MB RAM in use,
while my PC normally uses almost 1 GB of RAM when it runs all the programs that should be running at startup.
For some reason I knew that avast was causing this weird behavior, maybe because there could be compatibility problems with the built-in firewall of avast! and the firewall (Outpost Firewall 2009) I am using.
When the task bar was finally fully loaded I went to the Control Panel -> Add or Remove programs, but the list was empty, I didn't see "Please wait while the list is been populated".
So I used CCleaner to remove avast! Internet Security from my computer. The uninstallation was hanging when removing File System,
so I canceled it.
After that, I restarted my computer which was not shutting down. It kept showing the background (without desktop icons or taskbar),
so I put off the power and then started my computer again.
Internet Security seemed to be uninstalled completely now.
I don't know if avast had some compatibility problems with one of the following security programs I already used:
-Outpost Firewall 2009
-Ad-Aware Free with real-time protection enabled (the only thing it does is watching the processes)
I used avast 4.8 before, I had no problems with it.
Another possible reason why my computer started behaving weird was maybe because I was still using avast 4.8,
the installation of avast 5.0 uninstalled it automatically, but it's possible something went wrong.
I installed the avast! Free Antivirus, which is working very well (and not asking for restart) unlike Internet Security,
on Microsoft Windows XP Professional x64 bit.
