Optimize texture memory usage for unexposed view icons

Lowering the priority a bit, as there are other bugs to fight. Yet, this one maybe related to the mem leaks, so it may actually be fixes as part of this process.

I am running into this bug when users are typing search strings slowly. Please see my comment here: https://bugs.launchpad.net/ayatana-design/+bug/633100/comments/6.

Bumping importance because of the increased visibility.

This is not a release blocker, moving to alpha-2.

This bug was fixed in the package unity - 3.6.0-0ubuntu1

---------------
unity (3.6.0-0ubuntu1) natty; urgency=low

  * New upstream release.
    - Menu bar becomes blank periodically (LP: #683065)
    - Unity does not update when screen resolution changes (LP: #684539)
    - [dash] Keyboard navigation not implemented as specified (LP: #608132)
    - Dash - build the Desktop Dash (LP: #683719)
    - Quicklists not working (LP: #719780)
    - Launcher auto hide animation has a life of it's own / Unity launcher
      constantly sliding in and out without user interaction (LP: #717364)
    - compiz crashed with SIGSEGV in PrivateWindow::getModalTransient()
      (LP: #726235)
    - Don't show launcher number overlays on tap of super (LP: #726630)
    - Optimize texture memory usage for unexposed view icons (LP: #609994)
    - Unity should handle video-out keycodes that correspond to Super + P +
      Enter (LP: #632632)
    - dash - wrong count of remaining items to see (LP: #662605)
    - dash - x search box button visibility (LP: #662614)
    - Touch window management gesture previews (LP: #683688)
    - unity not working on rotated displays (LP: #694596)
    - unity main top bar in displays in wrong area (multi-head issue)
      (LP: #707209)
    - unity place group visual improvements (LP: #714528)
    - Implement ref_state_set for toplevel ATK objects in the panel service
      (LP: #715299)
    - Alt + F1 doesn't show the launcher if hidden (LP: #717125)
    - Keyboard navigation: Choosing a window from launcher doesn't change
      input focus. (LP: #721811)
    - Quicklists not closing when losing focus (LP: #724739)
    - wrong animation in the launcher (LP: #724956)
    - Window management - windows go below launcher and panel (LP: #725463)
    - Media and PrintScreen keys don't work (LP: #621887)
    - super-shortcuts should be "serializable" (LP: #638936)
    - Chromium icon in Unity is distorted / some scaled distored in the unity
      place applications (LP: #670169)
    - launcher stays on screen when it shouldn't | false show/hide positives
      on the launcher (LP: #711176)
    - Keyboard navigation: no public API to know the current Laucher Icon
      selected when key nav is activated (LP: #722660)
    - Require to implement AtkSelection on the Launcher (LP: #723804)
    - LauncherIcon accessibility support requires to expose the selection
      state (LP: #723806)
    - Add keyboard shortcuts for launching separate instances of applications
      (LP: #724865)
  * debian/control:
    - dep on latest nux
 -- Didier Roche <email address hidden> Tue, 01 Mar 2011 14:27:16 +0100