I see I'm not alone with this problem, but the other suggestions have not worked.
I have a laptop (HP nx6120) which keeps displaying "Power surge on Hub Port"
The exact error is "A USB device has malfunctioned and exceeded the power limits of its hub port. You should disconnect the device"
There aren't actually any devices connected to it.
I have tried:
* DIsabling USB 2
* setting the tray icon to "always hide"
I did find a patch but it seemed Dell specific so I didn't want to risk it on an HP.