[GTK3] No spinner when navigating to slow screens (e.g. first launch)

Thanks for your branch, Jacob! It's merged to trunk now and your fix will be available soon in the next development release of Software Center.

This bug was fixed in the package software-center - 4.1.21

---------------
software-center (4.1.21) oneiric; urgency=low

  [ Kiwinote ]
  * AUTHORS:
    - add credits for the new icon (LP: #834882)
  * a stash of unicode fixes to make s-c-gtk3 usable around the world
    (LP: #831865, LP: #834409, LP: #834312)
  * softwarecenter/db/update.py:
    - fix reinstall previous purchases (LP: #834984)
  * softwarecenter/ui/gtk3/panes/availablepane.py:
    - set title for 'previous purchases' list view (LP: #833960)
  * softwarecenter/ui/gtk3/panes/softwarepane.py:
    - fix None.copy() such that switching panes works again (LP: #834196)
  * softwarecenter/ui/gtk3/widgets/buttons.py:
    - escape application name in tiles (LP: #835876)

  [ Jacob Johan Edwards ]
  * softwarecenter/ui/gtk3/panes/softwarepane.py:
    - fix the spinner display when loading slow views (LP: #830682)

  [ Gabor Kelemen ]
  * po/POTFILES.in,
    po/POTFILES.skip:
    - update per latest configuration, add new gtk3 files

  [ Matthew McGowan ]
  * softwarecenter/ui/gtk3/widgets/buttons.py :
    - resize fix for Top Rated and What's New tiles (LP: #833697)
  * softwarecenter/ui/gtk3/views/catview_gtk.py,
    softwarecenter/ui/gtk3/widgets/containers.py:
    - disable the rendering of the checkboard pattern in the
      grid views (at request of mpt)
   * lp:~mmcg069/software-center/description-tweaks:
     - fix badly rendered package descriptions, other tweaks
       (LP: #833954)
   * lp:~mmcg069/software-center/globalpane-themeability:
     - various theming fixes (LP: #828092, LP: #830681,
       LP: #830738 and LP: #838382)

  [ Gary Lasker ]
  * software-center,
    software-center-gtk3,
    softwarecenter/db/update.py:
    - enable CJK support in Xapian (LP: #745243)
  * po/software-center.pot:
    - refresh .pot file
  * softwarecenter/ui/gtk/widgets/thumbnail.py:
    - fix missing icon in theme to let non-gtk3 version
      launch again, also fixes all gtk unit tests
  * test/test_database.py:
    - update unit test

  [ Didier Roche ]
  * softwarecenter/ui/gtk3/panes/installedpane.py,
    softwarecenter/ui/gtk3/views/appview.py,
    softwarecenter/ui/gtk3/widgets/menubutton.py,
    softwarecenter/ui/gtk3/widgets/oneconfviews.py,
    softwarecenter/db/appfilter.py,
    softwarecenter/ui/gtk3/app.py,
    data/ui/gtk3/SoftwareCenter.ui:
    - brings back OneConf to software center gtk3 with a fresh new design
      (LP: #838623)
  * debian/control:
    - depends on latest oneconf
 -- Gary Lasker <email address hidden> Thu, 01 Sep 2011 11:55:14 -0400