About a week ago I developed a few annoying issues on my test box. First the wireless drops out after only a few minutes, just long enough to download updates if I'm lucky. Unplugging the cable and plugging back in provides another few minutes access. Second the USB keyboard and mouse don't respond until AFTER I have logged in!
My wireless dongle is a Belkin F5D7050, I'm not sure what other information to give so please ask away.