Had an interesting troubleshooting session this afternoon on a Windows7 pc that was no longer having the screensaver kick in. After checking the screensaver settings were being deployed via group policy, disabling wake on lan and also preventing the network card from waking up the computer/allowing the computer to be shut down, the problem still persisted. Unplugging the wireless mouse (that was a new addition by the user and not the original supplied mouse) didn’t help either. In the end installing the latest intellipoint software and rebooting the machine fixed the problem. Just installing the software didn’t help.
It was nice that Windows7 had automatically found drivers, but it obviously needed the full software installed to work completely.
Subsequently we found a message popping up on the client pc that said the wireless signal strength was low – so it was probably the mouse trying to check in that was making the computer think activity was occurring on the pc.