Cut and paste / Windows 2000

Hi..

I got a problem with a user regarding Cut / Paste in Win 2000

Cut and Paste stops working after a few hours after booting up his PC.

I tried running clipbrd.exe on his PC but it hangs during startup and takes 99% of the CPU

If i reboot his PC then i can start the program and his cut and paste works fine again for another couple of hours..

But hes annoyed that he needs to restart his PC like 3 times a day to get it to work..

Anyone got any suggestions?.