I recently upgraded to Ubuntu 11.04, and have it set up with 4 workspaces. Most of the time I can switch between the workspaces without a problem using ctrl+alt+left/right/up/down, but at least once a day, I manage to hit some other combination that causes all of the windows to move to workspace 1 and resize all of the terminal windows. This is extremely frustrating because I have to stop what I was doing and move everything back where I had it and resize the windows again.
What combination of things is causing this to happen and how can I disable it?
Edit: I just had this happen after unlocking my screen as well, so it may not be directly related to switching my workspaces...
Edit (Jan 11, 2012): Updates are current as of earlier this week. .xsession-errors.old has a good amount of information in it, but I don't know what is significant and what is just noise, and it doesn't contain any timestamps, so I have no idea when what happened.
The last block of lines from .xsession-errors.old:
(indicator-multiload:1791): libappindicator-WARNING **: Unable to send signal for NewIcon: The connection is closed g_dbus_connection_real_closed: Remote peer vanished with error: Underlying GIOStream returned 0 bytes on an async read (g-io-error-quark, 0). Exiting. nm-applet: Fatal IO error 104 (Connection reset by peer) on X server :0. unity-window-decorator: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0.
Graphics card is an ATI FirePro V3700 (FireGL)