Same problem. It occurs when launching the new update-manager (0.53.1), for me from the control center and from the console. I confirm the Marco Paulo Martins Sousa's hypothesis that it could came from python, because of the console output it gave me :
[EMAIL PROTECTED]:~$ update-manager Introspect error: The name org.freedesktop.UpdateManager was not provided by any .service files Traceback (most recent call last): File "/usr/bin/update-manager", line 86, in <module> app = UpdateManager(data_dir) File "/usr/lib/python2.5/site-packages/UpdateManager/UpdateManager.py", line 300, in __init__ self.setupDbus() File "/usr/lib/python2.5/site-packages/UpdateManager/UpdateManager.py", line 443, in setupDbus iface.bringToFront() File "/var/lib/python-support/python2.5/dbus/proxies.py", line 25, in __call__ ret = self._proxy_method (*args, **keywords) File "/var/lib/python-support/python2.5/dbus/proxies.py", line 102, in __call__ reply_message = self._connection.send_with_reply_and_block(message, timeout) File "dbus_bindings.pyx", line 455, in dbus_bindings.Connection.send_with_reply_and_block TypeError: exceptions must be strings, classes, or instances, not type I saw the same kind of problem (which is ever reported) with cohoba- applet. -- update-manager crashed in feisty https://launchpad.net/bugs/79274 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs