Just found this very good independant Virus Software review site :-
http://www.software-antivirus.com/index.html
Confirms whats already been said here, ie. Norton is listed under 'Stay away' due poor stability and bad detection and uninstall problems.
Kaspersky Antivirus top of recommendations, but i've never heard off it ?
Plus McAfee Antivirus VirusScan Online ..........