My USB ports have been acting weird lately. Components not always recognized correctly, or not working...ex, the Canon MP970 printer. I just installed a D-Link powered USB hub. The comp seemed to recognize it right away, but devices connected to it are not recognized. I actually got my DAS Pro KB to work without having to disconnect/re-connect it every time I booted the comp. I connected it to one of the USB ports on my new 24" Dell # 2410f monitor. Ideas?