I gave up on Norton Internet Security long, long ago. It had a whimsical tendency to disable itself randomly without any notice every couple of days. I'd check on status and it would ask me if I wanted to enable it. Sometimes wouldn't enable without multiple reboots, then quietly disable itself a few hours later. Considering Symantec bought out one of the best firewalls I've ever used as a core technology for their product (AtGuard, was it called?), and I'd lost the purchase/download for that when I cross-graded to the norton, I was thoroughly dis-gruntled at the mess.