I just switched from Avast! to Microsoft Security Essentials. Avast! notified me about EVERYTHING and if it found a suspect email, instead of just quarantining it, it would stop processing emails until I dismissed the dialog. MSE is getting very good reviews and and totally unobtrusive.

>Can someone remind me what the options are for free antivirus programs, for home use - and perhaps a suggestion, which is best?
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>I have been using AVG for some years now, but the version I am currently using makes my computer very slow, and I can't even update to the latest version, recently announced - I get an error message every time I try.
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>Using Windows XP.