Wrong window closed.

[Newfie]

I had two Terminal Windows open. One was running "sudo apt-get upgrade" and the other one was editing a text document in nano.

I clicked the Close button in the Nano window, and it prompted me with the message "There is still a process running in this terminal. Closing the terminal will kill it."

I pressed "Close terminal", but the Nano window did not close; the other terminal with an upgrade running closed instead. It was not a mis-click; the windows were too far apart to be mixed up, and I am 100% sure that I clicked the right window.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome (not installed)
ProcVersionSignature: Ubuntu 2.6.37-3.11-generic 2.6.37-rc1
Uname: Linux 2.6.37-3-generic i686
Architecture: i386
Date: Sun Nov 21 01:38:29 2010
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101108)
ProcEnviron:
 LANG=en_CA.utf8
 SHELL=/bin/bash
SourcePackage: meta-gnome2

[Domenico Urbano (domurb)]

The problem is more generic. Sometimes you click the close button (upper left 'x') and, if any, the underlying window gets closed insted of the foreground one. It is unpredictable wheter it is going to happen or not, but it can be very dangerous (for example google chrome doesn't ask for confirm and just closes up).
 I experience this bug with ubuntu 10.04, compiz disabled and nvidia driver.

[Domenico Urbano (domurb)]

I think this is a duplicate of this one:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/559202