Hey there.
Following configuration:
OS: Win 7 Prof.
Bios: F14
Mouse: Logitech Mx518
Keyboard: Logitech G11
Problem:
Most of the time the important usb devices need some seconds (10-20) to reconnect again after Win7 wakes from sleep. You can see that the OS is already running, but both important input devices have no power (which leaves the computer useless in that period) until you hear that connecting sound from windows several times.
The weird thing is that it isn´t always the case. Maybe 1 in 10 times the USB devices have power from the usb port, but there is no clear pattern to reach this kind of behavior all the time.
So maybe somebody had a similar issue and can spare me the further search for the solution.