Since a lot of infections are malware and other things plus the fact that no one antivirus can find all issue, I think you need to scan with the other titles Grif notes at link.
-> http://forums.cnet.com/7726-6132_102-5098912.html?tag=posts;msg5099421
Bob
Norton 360 locates a "trojan.maljava.gen25" probably every day, even when I'm not connected to the internet.
It removes it, but where is it coming from?
How do I permanently get rid of it?
Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic