I've had a problem with the Dash bar in Ubuntu (11.04) Unity getting "stuck open". It happens when I'm dragging songs to a playlist in Clementine.
In any case, once it's stuck open, I haven't found any way to close it without logging out and logging back in. (I've tried going into about:config and changing the hide condition, but this doesn't help once the dash is stuck open).
So my question is: how to force the dash to close once it's stuck open?
[The issue itself is a bug in unity: see https://bugs.launchpad.net/unity/+bug/769703 ]