I have an HP Pavillion ze4560us notebook with XP Home. Recently I have been having several problems. It is very slow to load anything, freezes up often, and will not shut down properly. By not shutting down properly this is what I mean: When ever I go to shut it down it will get as far as "Windows is Shutting Down" and will stay at that point. A look at the task manager revealed that SYSTEM.exe is using 96-99% of the CPU. I have scanned it with Norton AntiVirus 2003, with the most recent Virus definitions and other updates- nothing. Spybot, and Ad-Aware have also scanned it-nothing. HELP ME!!!