QUOTE(usasma @ Jan 22 2008, 01:58 PM)

I suspect that SpyBot Search and Destroy is doing this. But, to be safe, I'd perform a free, online scan to verify that nothing has gotten past your current protection software. Try these:
http://safety.live.com (requires IE)
http://housecall.trendmicro.comIf they come up clean, then I'd suspect that the results were normal and would just keep an eye on them.
Thanks. I've run a bunch of tests (housecall among them) and am coming up clean. Here's what someone else had to say in a Yahoo forum. I think it's by some updates or install/uninstalls (which I do a fair amount of). I'm not going to worry about it. But will keep an eye on program files, etc.
Hi Northman
Dont fret thats normal... its detected a chnage since it last did a check, but if you installed or removed anything or updated anything then of course it will change, there normally 2 or 3 it finds, but this is basically to warn you thats these files have changed.
As the person aboves says it good and its free, but if you want the best, then its kapersky AV or NOD32 or similar, but these will cost around 25-35 each for one year. If you not happy with AVG (i use it myself) then try Avast its also free, just google avast, but its not as simple to use (in my opinion).
Hope this helps.... Good Luck