I recently built a media PC which is running Windows 7, Media Centre's not as responsive as I'd like it though, when clicking a button there's a noticable delay in it actually recognising it, and 1-2 seconds before the screen loads. Anyone got any ideas how I can speed it up? It's got an Athlon X2 6000+ with 2GB RAM in it atm, and I've ordered another 2GB. I've heard using a USB pen drive as a cache can help, anyone tried that?