* merged lp:~and471/update-manager/fix-bug-386196, many thanks * DistUpgrade/DistUpgradeView*.py: - port progress to new python-apt 0.8 API * merged lp:~mdz/update-manager/small-fixes-20100707, many thanks * DistUpgrade/DistUpgradeViewGtk.py: - call progressbar.set_fraction() less often to avoid too much CPU consumption on certain graphic drivers * UpdateManager/GtkProgress.py: - limit the amount of set_fraction() here too (LP: #595845) * UpdateManager/UpdateManager.py: - disconnect the model before adding lots of new items, this speeds up the building of the view massively