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[Andrea Azzarone <1120442@xxxxxxxxxxxxxxxxxx>]

Can you still reproduce this?

** Changed in: unity
       Status: New => Incomplete

** Changed in: unity (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1120442

Title:
  whole system bacame unresponsive

Status in Unity:
  Incomplete
Status in unity package in Ubuntu:
  Incomplete

Bug description:
  At the time this happened I had Google Chrome open and I took a
  screenshot with the Take Screenshot app.

  Suddenly the whole system became unresponsive. The mouse cursor would get stuck every once in a while; I couldn't click and drag to unmaximize the current window. Alt+tab did nothing. The launcher wouldn't show up when moving the mouse to the left of the screen. After hitting Ctrl+Alt+D (show desktop) several times unsuccesfully, at the end the desktop partially showed up, with pieces of windows and garbage all over. The system dropdown menu on the upper-right corner wouldn't show up. The whole system was stalled. CPU consumption seemed to be pretty high but not 100% (I guess from the noise of the fan)
  I had to force a hardware power off.

  After a fresh boot, as soon as I tried to open Google Chrome, this
  seemed to happen again, but this time the system recovered from this
  state by itself. Actually I switched to a virtual terminal with
  Ctlr+Alt+F1 (because I couldn't open a terminal window in any way) but
  I only logged in and ran "top" without figuring out anything useful.
  Then I switched back to the normal screen with Ctrl+Alt+F7 and
  everything was working normally this time.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: unity 6.12.0-0ubuntu0.2
  ProcVersionSignature: Ubuntu 3.5.0-23.35-generic 3.5.7.2
  Uname: Linux 3.5.0-23-generic i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.6.1-0ubuntu10
  Architecture: i386
  CompizPlugins: [core,composite,opengl,decor,vpswitch,mousepoll,compiztoolbox,snap,commands,place,resize,session,regex,grid,wall,move,gnomecompat,imgpng,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
  Date: Sat Feb  9 17:17:56 2013
  InstallationDate: Installed on 2010-06-23 (962 days ago)
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: unity
  UpgradeStatus: Upgraded to quantal on 2013-01-13 (27 days ago)

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