I don't think it is that straight forward. Seems to be more of a case by case situation.
I have a 2-port Belkin kvm that uses scroll-lock double tap to switch. It works fine with Windows 2K with no delay of mouse functionality. (On that switch my SUSE box is command-line only, so I don't know about the mouse.)
Then I have a 4-port Belkin KVM that is manual. With it the mouse goes crazy for several seconds when I switch to XP and about 30 seconds when I switch to SUSE 9.3.
The suggestion to use USB mice with KVM switches actually makes a lot of sense.
I wonder if using an adapter from ps2 to usb an plugging that into usb port will solve the problem will have to get one of them to see. On my mac mini I just got for home use I had to use one of those on a pc keyboard to get the mac mini to work with my kvm switch in order to share the monitor on it that I use for my pc. I now have 2 keyboards on on the mac mini but do not use the pc keyboard but the apple keyboard. will give this a try tomorrow when i bring in that adapter to try before I go an buy another one :). jack