Firewall?

I see what xmaddness and KorpDeath are talking about... I just downloaded ZA and it's already completely shut off all my programs three times. Its starting to really piss me off... why does it keep doing it?

Look, it's all about the mutex engine that ZA uses. There have been many threads about ZA here so do a search and finds what you are looking for.
As far as Blackice goes I personally would not trust it, I have put most of these firewall products to the test and the only ones I recommend are Sygate, Tiny, and Outpost.

The choice is invariably yours, I realize. But that won't stop me from trying to keep you from using an inferior product.