Traceback (most recent call last): File "/usr/lib/python2.6/dist-packages/UpdateManager/UpdateManager.py", line 572, in on_button_install_clicked self.invoke_manager(INSTALL) File "/usr/lib/python2.6/dist-packages/UpdateManager/UpdateManager.py", line 591, in invoke_manager self.install_backend.commit(self.cache) File "/usr/lib/python2.6/dist-packages/UpdateManager/backend/InstallBackendAptdaemon.py", line 41, in commit dia.run() File "/usr/lib/python2.6/dist-packages/aptdaemon/gtkwidgets.py", line 451, in run self._transaction.run() File "/usr/lib/python2.6/dist-packages/aptdaemon/client.py", line 262, in run self._method(*self._args, timeout=250) File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 68, in __call__ return self._proxy_method(*args, **keywords) File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 140, in __call__ **keywords) File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 620, in call_blocking message, timeout) DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.