It's kind of surprising to see how a supposedly so popular program never gets mentioned around here. Out of recommendations from other forums, I've decided to give the newest 7.5 freeware edition a whirl. Unfortunately, the detection rates still don't impress me much - AVG displays an uncanny ability to miss even mildly-edited variants of the same family, and in some instances, encrypting a known virus with a simple UPX packer also causes AVG to miss it entirely. I've been scanning a few virus zoos with it, and never once have I seen the heuristics trigger. Does anyone have any good experiences to share? Or is its popularity (people keep recommending it to me everywhere) simply due to a good marketing strategy?