I am running Norton Antivirus 13 on Windows XP. Suddenly a few weeks ago, upon start up my anti virus was disabled and could not be enabled. I had to uninstall with the Norton Removal Tool and Re install. That would solve it but only for a few days. After turning off the computer at night and turning it on in the morning it once again was disabled.
I tried the Norton Power Eraser and the Microsoft Safety Scanner and neither detected anything nor did my Norton Anti Virus after a full Computer Scan.
Any ideas for why this is suddenly happening and how it can be stopped?