Comodo slowing web browsing down

I am running Windows XP Pro SP2, Spyware Terminator, SpywareBlaster and the latest version of Comodo Firewall. My system is a 2.8 P4 with 1.5 GB of RAM. I was using Sygate and decided to give Comodo a try since Sygate is no more.

Anyway, every time I go to the web either using FireFox or Internet Explorer the system runs at least 2 to 3 times slower than before. If I turn off Comodo things speed up back to normal. I also, noticed the same thing happening when opening emails that have links to web pages.

Any advice would be greatly appreciated. I never had this problem with Sygate.