crash when looping paint list in preparePaint (on closing windows)

This bug was fixed in the package unity - 4.18.0-0ubuntu1

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unity (4.18.0-0ubuntu1) oneiric; urgency=low

  * New upstream release.
    - Screen corruption when resuming from suspend/hibernate (LP: #676166)
    - unity-panel-service crashed with SIGSEGV in bamf_factory_view_for_path()
      (LP: #764024)
    - Dash and launcher appear underneath windows (LP: #805087)
    - unity-panel-service crashed with SIGSEGV in g_type_check_instance_cast()
      (LP: #811401)
    - [Oneric] unity-panel-service crashed with SIGSEGV in getenv()
      (LP: #817691)
    - compiz crashed with SIGSEGV in unity::FilterBar::RemoveFilter()
      (LP: #845732)
    - crash on closing a window (LP: #856015)
    - Cannot open a window that starts iconified (LP: #732997)
    - Launcher - When useing Alt F1 launcher keyboard navigation, Launcher
      should not scroll until top or bottom of Launcher is reached
      (LP: #765749)
    - Stacking problem when switching between apps with multiple windows
      (LP: #802527)
    - Pull panel to de-maximize window occasionally not working in a secondary
      screen (LP: #802651)
    - Window under Dash gets focused if it opened later (LP: #830730)
    - Clickable areas of previously active window remains on 'Show Desktop'
      (LP: #836325)
    - A minimized window 'remains' behind on the desktop if
      /apps/compiz-1/plugins/unityshell/screen0/options/show_minimized_windows
      is set to true (LP: #847967)
    - a11y support on Unity is broken (LP: #851103)
    - compiz crashed with SIGSEGV in dee_model_get_tag() (LP: #840758)
    - crash when looping paint list in preparePaint (on closing windows)
      (LP: #853807)
    - Alt-Tab should not preview windows at excessively large sizes
      (LP: #854740)
    - Clicking on a tweet/message link sometimes does not work (LP: #790565)
    - Dragging a launcher icon makes it squashed (LP: #855761)
    - unable to unminimize gedit windows where more than one window where one
      has a dialog open (LP: #856030)
    - (oneiric) alt-tab UX doesn't work well on multi-monitor (LP: #855364)
    - Launcher shows on the primary monitor instead of the left most monitor
      (LP: #857668)
    - Keynav - pressing down key causes launcher items to jump up and down
      (LP: #858469)
    - Windows creep cross the screen with ALT+TAB (LP: #722830)
    - Minimize animation flickr when for maximized apps (LP: #737125)
    - All unity windows are invisible (panel, launcher, dash) (LP: #745996)
    - Dash "See 97 more results" has ~1 second of latency (LP: #731158)
    - Windows cannot be dragged down from panel if banshee closed to sound
      menu (LP: #781215)
    - no menu bar on top, compositing bug? (LP: #806358)
    - Launcher - a spread can accidentally be triggered during the 'dragging
      and dropping behind the Launcher' interaction (LP: #832988)
    - Impossible to navigate between panel menus when the mouse cursor is over
      the panel (LP: #834065)
    - Pressing alt on maximized window does show menu but not window controls
      (LP: #836274)
    - Application name drawn under Dash controls when window opens under Dash
      (LP: #838176)
    - Start ...