Originally posted by: scottish144
Norton AV Sux. Use a good free one like Antivir, BitDefender, or AVG.
http://www.free-av.com/
http://www.bitdefender.com/site/Main/view/Download-Free-Products.html
http://grisoft.com/doc/289/lng/us/tpl/tpl01
Edit: Yes go for a full reinstall if ur getting a lot of errors. Norton has a bad habit of leaving random bits of software behind.