cursor : weird disappearances

[Beartooth]

	On at least two machines (my main PC, running F14 fully updated; 
and my old laptop, an IBM  Thinkpad T30 running F16 Beta on backup or 
shell or whatever it's called) I've started seeing a really weird 
behavior.

	Every once in a while, completely unpredictably afaik, the cursor 
suddenly disappears. I have it set to display its position when I hit 
Ctrl; but it doesn't, until I wave the mouse around in huge sweeps. Once 
I start doing that (and continuing to tap Ctrl every few seconds) it 
eventually shows up somewhere at the outer edge of the screen. 

	I have an HP mouse at the PC (through a KVM switch), and a 
Logitech mouse on the laptop.

	What could be making it do that?? Is this a bug? A known bug?

-- 
Beartooth Staffwright, Not Quite Clueless Power User
I have precious (very precious!) little idea where up is.