Please describe the problem:
When using gdmflexiserver to switch users by pressing the "Change to existing
display" button with the space bar (held on until the display changes), the
computer will keep beeping until you switch back.

Steps to reproduce:
1. Either select from the main menu Applications > System Tools > New Login, or
enter in the terminal from your GNOME session "gdmflexiserver"
2. Create a new session by either logging in again as yourself or logging in as
another user.
3. Use New Login again. A dialog should come up with a list box with the other
user listed and three buttons at the bottom.
4. Select the user from the list.
5. Use TAB to select the button "Change to existing display" and hold spacebar
until the display changes. (On a fast system this will be less than a second.)
6. Listen to the wonderful music. Your computer should be beeping continuously.
(If you have the standard audible bell for X enabled)
7. In order to prevent your neighbours getting annoyed, switch back to the other
user and the beeping will cease. You will also notice that the XScreensaver
password entry box is full of stars.

Actual results:
I believe when you select the "Change to existing display" button with the
spacebar, the button responds on the "button down" event and changes display
before the user releases the spacebar. On the previous display, the "keyboard
up" event is never received because it is received on the new display that is
changed to before the spacebar is released, thus making a whole lot of spaces
being entered into the password box in xscreensaver and the beeping.

Expected results:
Phonecalls from neighbours.

Does this happen every time?
It happens on GNOME 2.10 on both Ubuntu 5.04 "Hoary Hedgehog" and SuSE 9.3
Professional. Spacebar must be held until the display changes for it to happen.
This issue is more likely to occur on faster systems, as on a slow system the
spacebar may be released before the display changes, but on faster ones, the
display may change very quickly.

Other information:
I am guessing that changing the buttons on the new login dialog to respond on
the keyboard UP event or clearing keyboard / mouse events before / after
switching displays would fix it.

Only nerds like me use the spacebar to press buttons! (My Dad didn't even know
you   could press buttons using the spacebar.)