ok since march i reformated twice then a made a full scan with zass updated it told me that found email-worm.win32.agent.ggd on these files:

C:\windows\bricopacks\vista inspirat 2\packfiles\7_calc.exe & C:\Windows\System32\calc.exe

i searched over the web and found nothing about it maybe its a false positive.

i made a online analysis:

http://www.virustotal.com/es/analisis/d61b...5f7936dab964b71

found the same virus or with another name on the file infected.

the infected file if somebody wants to examine it:
Infected file download

somebody know if it is a false positive or if its a real malware.

http://www.kaspersky.com/scanforvirus

Attention!

Kaspersky Anti-Virus has detected a virus in the file you have submitted...

Scanned file: 7_calc.exe - Infected
7_calc.exe - infected by Email-Worm.Win32.Agent.ggd

Addition: Like you, I can't determine if it's a false positive. Sorry.

yep i made a online scan with kaspersky and told me the same told me zass so i download bitdefender free and its found nothing so i'm very confusing 'cause one antivirus found something but another found nothing.