As I already posted in another thread
AV resident programs have only given me trouble so I no longer run any. Every once in a while I run a web-based AV and the only detections I’ve had in all these years were all false positives. Cookies, Hosts file entries, etc were flagged as infections when in reality they were not infections at all and were, in fact, things I wanted there. Those programs sell by scaring you into thinking they are protecting you from the terrorists.
I am now running ZoneAlarm Pro V6 which includes an antispyware program and which recently detected a Trojan in the latest Flash 10 player which it disabled. It also turned out to be a false positive which, contrary to what the Zonelabs site says, has not been corrected.
So I take all reports with a grain of salt and, after searching for signs of the infection I always find out it was a false positive. YMMV.