Used to LOVE Norton products back in the day... now I won't touch 'em with a 10' pole. Total junk. Get yourself something that actualy WORKS, AND is free. www.grisoft.com Download AVG 7 free edition after you wrestle that Norton crap off you machine. Only hitch, NEVER be burning when there's an automatic scan schedueled to start soon!
Another good link, while we're on the subject is www.housecall.antivirus.com I learned LONG AGO that, as good as one virus scanner may be, running a second from time to time DOES in fact, occasionaly pick up a bug that another had missed.