I use F-Prot anti-virus, Ad-Aware, and Crap Cleaner on a regular basis. Seems to keep the vast majority of nasties at bay, but I do update them all at least once a week.
As a back-up I use the free Housecall facility on the Trend Micro website.
Like you, I had nothing but problems with Norton.
Good luck,
Brian
Edited to add - I also use Zone Alarm and, very recently, now browse via Mozilla Firefox
Last edited by Brian Dixon; 22nd Apr 2006 at 15:51.