system
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Sounds like a problem that I had a week ago except that in my case this happened in user account only (not admin).
http://forum.avast.com/index.php?board=2;action=display;threadid=2715
I solved my problem few days ago. I think the problem was c:\windows\temp directory where avast! saves/deletes some temporary files during the definition update. As a user I didn’t have enough rights to this directory (I was even unable to view the content of it). I solved this by moving the XP’s temp directory to the shared folder. After that I’ve had no problems.
Anyway, in your case it must be something else if updating didn’t work in admin account.
– Jeccu –
I had originally installed from an admin acct, and the problem was in my limited user account that I normally use. I have since changed my limited user account to an admin account, where the problem remains. I’m wondering if I should consider uninstalling, and then reinstalling from this account while it is still an admin account, and see if this resolves the problem. And if so, they seeing what happens when it goes back to a limited user account.