Ok, i am not going to discuss your computer.... but PLEASE do yourself a favour and chuck norton away...... rather get TRend micro..... norton lets LOADS of viruses through <img src="/ubbthreads/images/graemlins/disagree.gif" alt="" />
Or at the very LEAST, install spybot so you can close some of window's major vulnerabilities (DSO exploits) and prevent Some viruses of hopping onto your pc.