Bit of a weird setup.

I have two machines, both accessed via a PS/2 KVM.

In the front of the KVM I have a USB KEYB and MOUSE via USB->PS/2 adapters.

The FC5 machine connects to the KVM via PS/2.

*****PROBLEM*****
When I plug a USB hard disk into the FC5 machine the mouse pointer freezes to the screen. How can I resolve this problem.

JD