Its listing Localhost as the intruder. I would add that to the trusted sources, it should reduce the number of "attacks" you get.

Also, do you have Apache running? It does list that as the source of the attacks.

Using Proxies with Norton Internet Security can also be a huge cause of trouble. Honestly, I'd just go ahead and use Sygate Firewall instead. Just about as good, easy to use, and it doesn't give this kind of crap.

Best of all...its free at Download.com

I hope the first two ideas might help you out. Let us know either way. :-)