Please describe the problem:
I tried to bind alt-pgup and alt-pgdown to previous track and next track. When I
did this and hit Close, I no longer could use my pgup and pgdown buttons, with
or without alt, shift, ctrl, etc.

When I went back and deleted these two bindings and hit Close, I still could not
use pgup and pgdown in any way until I logged out and back in. However, if I
logged out and back in with these bindings still in place, I still couldn't use
pgup/down.

When I went back into the keybinder to try this again after a reboot, I pressed
alt-pgup for previous and alt-pgdown for next track, but in the 'Shortcut'
column some strange things showed up, not alt-pgup etc. A screenshot of this is
here:

https://netfiles.uiuc.edu/gburt/www/keyboard.png

Steps to reproduce:
1. Open gnome-keybinding-properties
2. Add a 'shortcut' for previous track = alt-pgup, next track = alt-pgdown
3. Close, and then not be able to use pgup or pgdown in any capacity


Actual results:
The pageup/pagedown keys are rendered completely unusable - the desired shortcut
doesn't work, pgup/pgdown in a scroll window no longer works, shift-pgup/down
doesn't work in gnome-terminal, etc.

Expected results:
The shortcut to work and for other uses of pgup/pgdown not to be affected.

Does this happen every time?
Yes

Other information:
I'm using Ubuntu Hoary on a Dell Inspiron 4000.

Here a bit from my xorg.conf file:

Section "InputDevice"
    Identifier  "Generic Keyboard"
    Driver      "keyboard"
    Option      "CoreKeyboard"
    Option      "XkbRules"  "xorg"
    Option      "XkbModel"  "pc104"
    Option      "XkbLayout" "us"
EndSection

xserver-xorg package is version 6.8.1-1ubuntu10