Been Having issues latley with wireless networks on fedora.

(I am using F9 a Live copy on a USB thumb drive with a 1.7GB Overlay for saving files)

It will only connect to the wireless netowrk on the first login, and it stays connected a random set time sometimes its 10 minuites somtimes it never louses it, But once it does louse the network it will nto connect it comes up with the key required allready filledin with some kind of hex, and no matter if I put the right key in or not it does not connect again until you restart?

Any ideas?

(I've only been learning linux for about 2 weeks now so it this is somthing amazingly stupid , sorry!)