Comment 4 for bug 635636

I'm also having this issue. I thought it was bug 651237 but technically the daemon is not quiting, it's just not connecting. Using the latest version from maverick-proposed, 1.4.5, these are the responses to 'u1sdtool -s' after logging in:

[Inside 1 min]
Oops, an error ocurred:
Traceback (most recent call last):
Failure: dbus.exceptions.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.

[After 2 mins]
State: LOCAL_RESCAN
    connection: Not User With Network
    description: doing local rescan
    is_connected: False
    is_error: False
    is_online: False
    queues: WORKING_ON_METADATA

[After 4 mins]
State: READY
    connection: Not User With Network
    description: ready to connect
    is_connected: False
    is_error: False
    is_online: False
    queues: WORKING_ON_BOTH

At no point does U1 connect or think it is online despite a wired connection (managed through Network Manager) that every other application has no problem with. Once the initial DBus oops error has finished the workaround is to quit and restart u1sdtool daemon.