A little more information about my situation and a question as a newbie… This malware blocked notice with ad.yieldmanager.com happened on both chrome and IE 8 (i’m on XP still). In limited testing, basially same sites (yahoo.com included) on certain ads being shown. I checked another computer (home vs. work) and that was fine for the same sites. So, I figured that something was wrong with my computer rather than avast. Fast forward, I ended up doing a restore and whole bunch of stuff. Restore effort produced the same issue with avast so at that point I started to think maybe there’s something wrong with avast on this particular computer.

I’m still not sure whether I have a virus on my computer or there’s something happened with avast.

So, my question for anyone who’s gone through this more than I have, how do I determine that?

I also really wish that there’s a easy way to go back to previous virus definition or version ( remember there was one program update last year or so that was giving FP on windows files that caused quite a bit of issue for many folks).

thanks.