Public bug reported:

On many GTK applications, such as gnome-terminal, terminal, Chromium-
Browser (sometimes) and Libre Office, the mouse pointer is flickering,
sometimes even slowing down the performance of the application. The
mentioned Terminals, for instance, are practically unusable. xterm on
the other hand does not exhibit the mouse flickering behaviour and
performing fine.

When I move the mouse pointer onto the window decoration or an
application that is not concerned with the problem, the flickering
disappears, as well as the mouse pointer, and the performance is back to
normal.

While flickering, the file ~/.xsession-errors gets filled up with
messages like "Warning from the window manager: Got a request to focus
xxx (yyy) with a timestamp of 0.  This shouldn't happen!" whereas xxx is
some hexadecimal number and yyy usually coresponds to the window title
or program name that the mouse cursor is currently flickering on.

.xsession-errors usually gets up to 700mb or even 1.6gb big.

I have a Lenovo SL510 and having graphics problems since Precise, maybe
it's a graphics driver issue and not related to unity-2d? I was able to
use unity before, now since the upgrade I can only use unity2d, on xfce
I did not encounter the bug.

lspci gives me:

00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset 
Integrated Graphics Controller (rev 07)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset 
Integrated Graphics Controller (rev 07) 

Thanks for any help!

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity-2d-shell 5.10.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
ApportVersion: 2.0.1-0ubuntu4
Architecture: amd64
Date: Thu Apr 19 13:51:23 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: unity-2d
UpgradeStatus: Upgraded to precise on 2012-02-29 (49 days ago)

** Affects: unity-2d (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise unity-2d

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https://bugs.launchpad.net/bugs/985660

Title:
  Warning of the window manager: Got a request to focus xxx (xxx) with a
  timestamp of 0.  This shouldn't happen!

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