I'm running Ubuntu 11.04 64 bit version.
Nothing happens when hitting "Install Updates" button in Update Manager, except for the mouse cursor shortly (<1 second) displaying the wait icon.
I can update using apt-get without any problems.
Also in the Ubuntu Software Centre, nothing can be installed, and the problem is similar, when hitting the Install button, the mouse cursor shortly changes, but nothing else happens. And also here I can perform the install using apt-get.
Update: Checked syslog (for Update Manager) and got the following:
Jun 10 07:51:05 mihubuntu AptDaemon: INFO: CommitPackages() was called:
dbus.Array([dbus.String(u'')], signature=dbus.Signature('s')),
dbus.Array([dbus.String(u'')], signature=dbus.Signature('s')),
dbus.Array([dbus.String(u'')], signature=dbus.Signature('s')),
dbus.Array([dbus.String(u'')], signature=dbus.Signature('s')),
dbus.Array([dbus.String(u'language-selector'), dbus.String(u'language-selector-
common'), dbus.String(u'language-selector-gnome'), dbus.String(u'rhythmbox'),
dbus.String(u'rhythmbox-plugin-cdrecorder'), dbus.String(u'rhythmbox-plugins'),
dbus.String(u'shotwell'), dbus.String(u'software-center'), dbus.String(u'unity'),
dbus.String(u'unity-common'), dbus.String(u'unity-place-files')],
signature=dbus.Signature('s')), dbus.Array([dbus.String(u'')],
signature=dbus.Signature('s')) Jun 10 07:51:05 mihubuntu AptDaemon.Trans: INFO: Queuing
transaction /org/debian/apt/transaction/687c7f6b69c84bbd94912504a7b9f988 Jun 10
07:51:05 mihubuntu kernel: [ 1138.262724] show_signal_msg: 27 callbacks suppressed Jun
10 07:51:05 mihubuntu kernel: [ 1138.262731] polkitd[586]: segfault at 20 ip
00007f31f777bb42 sp 00007fff4159c128 error 4 in libglib-
2.0.so.0.2800.6[7f31f76fd000+ed000]
Tried to reinstall Update Manager, and that did not help.
Did do the upgrade of the Software Centre, but that didn't help either. From the Syslog:
Jun 10 08:01:20 mihubuntu AptDaemon: INFO: CommitPackages() was called:
dbus.Array([dbus.String(u'filezilla')], signature=dbus.Signature('s')),
dbus.Array([dbus.String(u'')], signature=dbus.Signature('s')),
dbus.Array([dbus.String(u'')], signature=dbus.Signature('s')),
dbus.Array([dbus.String(u'')], signature=dbus.Signature('s')),
dbus.Array([dbus.String(u'')], signature=dbus.Signature('s')),
dbus.Array([dbus.String(u'')], signature=dbus.Signature('s'))
Jun 10 08:01:20 mihubuntu AptDaemon.Trans: INFO: Queuing transaction /org/debian
/apt/transaction/b1d6cb76d47a4e94961774af7471848a
Jun 10 08:01:20 mihubuntu kernel: [ 1752.008865] polkitd[6605]: segfault at 20 ip
00007f5b7071ab42 sp 00007fffc402e608 error 4 in libglib-
2.0.so.0.2800.6[7f5b7069c000+ed000]