Refresh button disappeared in Quantal version

[Marius B. Kotsbak]

There is no longer a button to refresh the package lists (i.e. apt-get update). It seems like it does it automatically at startup, but this breaks at least the following use cases:

1) No network connection at startup. After network connected, update-manager must be restarted for the package list to be updated.

2) Some of the apt sources fails, then I go to the apt sources config dialog and afterwards want to test if all sources are found.

Maybe those use cases can be solved without a refresh button if the refresh would happen automatically instead.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: update-manager 1:0.171
Uname: Linux 3.6.0-030600rc4-generic i686
ApportVersion: 2.5.1-0ubuntu7
Architecture: i386
Date: Fri Sep 7 19:09:25 2012
EcryptfsInUse: Yes
GsettingsChanges:
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'launch-time' b'1347037686'
 b'com.ubuntu.update-manager' b'show-details' b'true'
 b'com.ubuntu.update-manager' b'window-height' b'744'
 b'com.ubuntu.update-manager' b'window-width' b'1317'
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=nb_NO:nb:no_NO:no:nn_NO:nn:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=nb_NO.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: Upgraded to quantal on 2012-08-31 (7 days ago)