Imckenzie....As long ZA say's it's being blocked I'm comfortable with that,More-so than I am turning it off. I also run SPYBOT-search and destroy,,,I went looking last nite to see if it showed up, But it doesn't find it even when ZA shows it running and you scan the system with SPYBOT. As a side note...I noticed a 100% improvment in stability when on-line with SPYBOT...I've tried all the other firewalls and such,,,But being on a dial-up(YES STILL!!!) I became upset with constant D/L'd upgrades in the middle of down-loading files!! And knock on wood...in the 3 years I've used ZA, Only once has it ever blocked a "Virus filled E-mail"...and that was from somebody I knew... :-(.....