Just Wondering

I just started using CPF on a fairly new pc( 1 1/2 yr old ) I’m running an athlon 64 2.4 gh with win xp sp2 and I was noticing that some web sites loaded slower especially my isp’s email. I also need to mention I am using a 2wire gateway (dsl modem and router hardware firewall) I tried reading through the help files but couldn’t find anything pertinent, so on a hunch I added my Ethernet card to the network monitor list under source and remote and this seems to have solved the problem but knowing little about security I was wondering was this a good idea and has anyone else had this experience?

Yes you must define your lan to the trusted zone. You could also do this by the wizard “add a trusted zone”.