I have the same problem on Kubuntu 10.10 with the microsoft wireless keyboard 800 and microsoft wireless mouse 1000. I can temporarily fix it if I unplug the usb wireless reciever and plug it back in again.
I have the same problem on Kubuntu 10.10 with the microsoft wireless keyboard 800 and microsoft wireless mouse 1000. I can temporarily fix it if I unplug the usb wireless reciever and plug it back in again.