Thanks Bob,
I know when I did a virus definiton update on win 98--then it told me my hard rrive was bad and would not boot-- that is when I switched to clam. For windows xp--I believe it forced me to update the program and then it when all my locking up issues started. I have read a few of your postes, and think I was in the general area when I previously posted the two links. Interesting how avast main page has the dowload yet in that link it then breaks it down my OS