I have a Logitech Wireless Mouse with Unifying Receiver plugged into my iMac - and when the computer is put to sleep (cmd alt eject), after wake it will not respond to mouse movement. If the computer sleeps by itself, restarts or otherwise - no problems. If I remove the USB receiver from its port and replace it, everything starts working again fine.
I also have a Macbook Pro with the same software and same mouse - no problem. I tried swapping the mice over and replacing the Unifying Dongle.
Can anyone recommend how I might go about troubleshooting this?