I don't really even notice the full page load limitation. A co-worker of mine was talking about it, I didn't even notice it. Whats the big fuss?
It happens if are on a web page you use just to get to another site like news links and stuff. You have to wait for the entire page to load before clicking out. Can be very annoying if you're on dialup. Other than that Firefox is pretty fast in my opinion.
