Top panel is not reacting on the mouse pointer

[Simplehuman]

After about 1 hour of uptime top panel is not reacting on the mouse pointer. I can't interact with any applet and user menu. I can't interact with any software menu on the top panel. It is just not reacting.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: unity 6.4.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
Uname: Linux 3.5.0-13-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.5.1-0ubuntu4
Architecture: amd64
CompizPlugins: [core,composite,opengl,decor,imgpng,place,regex,compiztoolbox,gnomecompat,commands,obs,mousepoll,resize,session,unitymtgrabhandles,vpswitch,move,grid,animation,workarounds,wall,expo,fade,ezoom,scale,unityshell]
Date: Sat Sep 1 11:42:53 2012
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120822)
ProcEnviron:
 LANGUAGE=ru_UA:ru
 PATH=(custom, no user)
 LANG=ru_UA.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Omer Akram (om26er)]

are you using libreoffice when it happens?

[Simplehuman (simplehuman)]

Yes, 1 Calc window is open in background.

[Omer Akram (om26er)]

Thanks for the bug report. This particular bug has already been reported and is a duplicate of bug 1041354, so is being marked as such. Any further discussion regarding the bug should occur in the other report. Feel free to report any other bugs you may find.

[Simplehuman (simplehuman)]

This is not a 100% duplicate. Unity left panel was active, the dash was active. Only the top menu does not respond.

[raevol (raevol)]

I have 100% repro of this issue immediately after switching conversation tabs in Pidgin. Running Saucy, and I can see the unity-panel-service jump to 100% cpu usage in top and in conky. Please contact me if you need any more info.

[raevol (raevol)]

This is fixed for me in saucy as of updates today, at least following my steps above using Pidgin. Will comment again if I see it elsewhere. If anyone else had repro for libreoffice and can verify a fix against a fully updated Saucy, that'd be useful for people reviewing this bug I am sure...

[raevol (raevol)]

As of updates today the bug is back, using the same repro of switching conversation tabs in Pidgin. I don't know if it was a fluke before that I saw it as fixed, but it's definitely back now.

[raevol (raevol)]

For anyone watching this bug, I found https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1199877 , and it looks like a fix was released today. Seems fixed following my repro.