KVM switch, at least some, and Linux seems to not work together. I use a PS/2 KVM to have both the Linux and the MacOS X desktop using the same screen/keyboard combo. When I switch out then switch back the Linux box, the mouse goes mad.... The only solution is to reboot.

Apparently the bug has been around for over a year as it is reported in 2.6.1 and also in 2.6.9. I use 2.6.10 kernel from Ubuntu. In fact it is a known Linux kernel bug 779 and Linux kernel bug 2082.

It works fine with the MacMini (using the PS/2 to USB adapter).

Looks like I'll have to try hacking that driver.

Update: In fact there is patch. Filed Ubuntu bug 7335 to have it integrated.