So here's an interesting problem I've been having (and I do apologize if this has been posted, search provided no feedback): Using either my MM or my Logitech USB mouse the cursor will jump to the edge of the screen at seemingly random intervals in whichever direction I'm moving it. This is particularly frustrating when playing WoW, causing me to move in all sorts of crazy directions. As I mentioned it happens using Bluetooth, not using Bluetooth, using USB with/out Bluetooth enabled. I can't figure out what's causing the interference. Any suggestions?