FWIW, I'm experiencing the same problem on two systems with a Logitech
MX500 mouse. Yet on a third system, hooked up to the same KVM and mouse,
no problem. I've checked the accessibility settings and mouse settings.
They're identical on all systems. No Logitech drivers are installed and
the only common thing between the two 'flakey' systems is that the
Intellimouse drivers were installed at one time (oddly enough, the
Intellimouse Explorer does not exhibit this problem but I experience
another with the KVM in that the accelleration changes when switching
from KVM port to port. Switching to another and back usually restores
the accelleration.)
No clue as to what the solution would be. Right now, I'd rather have
this scroll wheel oddity and fluid mouse acceleration on port switches.
Dan