What to make of detected virus by Avast?

[cotty]

Avast found this virus:

POSTOOBE.NEC

It advised me to quarantine it, which I did.

I would like to know if I can erase it without any problems.  I used the virus total website to scan the file with several antivirus engines and I got these results:

AntiVir 6.35.0.21 07.19.2006  no virus found

Authentium 4.93.8 07.19.2006  no virus found
 
Avast 4.7.844.0 07.19.2006 VBS:Malware

AVG 386 07.19.2006  no virus found
 
BitDefender 7.2 07.20.2006  no virus found
 
CAT-QuickHeal 8.00 07.19.2006  no virus found
 
ClamAV devel-20060426 07.19.2006  no virus found
 
DrWeb 4.33 07.19.2006 VBS.Generic.278
 
eTrust-InoculateIT 23.72.73 07.20.2006  no virus found
 
eTrust-Vet 12.6.2301 07.19.2006  no virus found
 
Ewido 4.0 07.19.2006  no virus found
 
Fortinet 2.77.0.0 07.19.2006  no virus found
 
F-Prot 3.16f 07.19.2006  no virus found
 
F-Prot4 4.2.1.29 07.19.2006  no virus found

Ikarus 0.2.65.0 07.19.2006  no virus found
 
Kaspersky 4.0.2.24 07.20.2006  no virus found
 
McAfee 4810 07.19.2006  no virus found
 
Microsoft 1.1508 07.20.2006  no virus found
 
NOD32v2 1.1668 07.19.2006  no virus found
 
Norman 5.90.23 07.19.2006  no virus found
 
Panda 9.0.0.4 07.19.2006 Suspicious file
 
Sophos 4.07.0 07.20.2006  no virus found
 
Symantec 8.0 07.20.2006  no virus found
 
TheHacker 5.9.8.178 07.19.2006  no virus found
 
UNA 1.83 07.19.2006 VBS.virus
 
VBA32 3.11.0 07.19.2006  no virus found
 
VirusBuster 4.3.7:9 07.19.2006 no virus found


I can't undertand why some say it is a virus and others don't. Would you say it is pretty safe to delete this file?

Thanks in advance.

[Lisandro]

Avast found this virus: POSTOOBE.NEC It advised me to quarantine it, which I did.
I can't undertand why some say it is a virus and others don't. Would you say it is pretty safe to delete this file?

This seems to be a false positive, not real a virus. None antivirus is perfect, so avast can be detecting what is not a real infection.
If it is indeed a false positive, send it in a password protected zip to virus@avast.com
Please, mention in the body of the message why you think it is a false positive and the password used.

I would like to know if I can erase it without any problems.

Chest (Quarentine) is safe. You can let the file there, for analysis, more two weeks... than you can delete it