I have owned a Dual 2GHz 64 bit Power PC since 2004. In that time, it has performed virtually flawlessly. Now, all of a sudden, I'll be working away and a warning window with a large white exclamation mark in a red octagon pops-up stating: USB over current Notice. A USB device is currently drawing too much power. The port to which it is attached will be deactivated. The window repeats itself cascading down 3, 4 or 5 times. This will continue to happen even when Ive disconnected the only 2 USB devices attached to the computer, i.e., an Apple keyboard and a Kensington Expert Mouse (#K64325). Can anyone shed some light on this problem. It is very disconcerting (not to mention annoying). Does anyone have a solution for me (other than junk the old beast)? The fact is it still works great for both Final Cut and ProTools.