unplugging webcam locks keyboard

[Robert Crosbie]

Hi,

I have a similar and possibly related issue here:
http://ubuntuforums.org/showthread.php?t=6823

If I boot into Warty Ubuntu with my usb Quickcam camera plugged in,
but then unplug the camera after I have logged in, my keyboard will
stop responding.  The keyboard seems dead, all keys are unresponsive. 
Although my keyboard (Microsoft Natural) is usb capable, I have it
plugged into a PS/2 port.  Plugging the camera back in does not revive
the keyboard.

The mouse and desktop still function, but when I shutdown, it appears
the computer locks up requiring a hard reset.

Any Idea what could be going on here?

Cheers,
SwinginCelt