Comment 3 for bug 665193

I have the same error. U1 does not connect and complete sync. The Nautilus menu has lost the U1 options- they initially appear after an Ubuntu reinstall up to the first attempted sync.

I have tried all the suggestions in the U1 help area including complete reinstalls of all UbuntuOne packages in Synaptic. I am running 10.10 64bit. Other machines on my network sync fine with different U1 accounts.

My U1 sync updates are hung at 457MB (never to progress although it appears that Tomboy syncs still work). U1 options have disappeared from all Nautilus context menus, and whenever I attempt a U1 Restart or Connect thru the U1 control panel things sit and spin until they finally stop (probably due to boredom).

When I ran:
mark@mark-asus:~$ echo -e "[logging]\nlevel = DEBUG" > ~/.config/ubuntuone/logging.conf; u1sdtool -q; u1sdtool -c
ubuntuone-syncdaemon still running.

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.

Last log entries were:
2011-01-11 08:36:27,987 - ubuntuone.SyncDaemon.sync - INFO - T:NONE:F 771529c9-3f67-4416-bb08-b5dbc521acb5 ['25155d14-1b72-45f0-9652-31793190723d'::marker:771529c9-3f67-4416-bb08-b5dbc521acb5] ''Documents/icons/Crystal Clear/128x128/actions/editcopy.png'' | Called calculate_hash (In: T:NONE:F)
2011-01-11 08:36:27,988 - ubuntuone.SyncDaemon.StorageClient - INFO - Connection lost, reason: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionLost'>: Connection to the other side was lost in a non-clean fashion: Connection lost.
].
2011-01-11 08:36:27,988 - ubuntuone.SyncDaemon.ActionQueue - WARNING - Connection lost: Connection to the other side was lost in a non-clean fashion: Connection lost.

u1-prefs.log reads:
2011-01-11 08:26:30,020 - ubuntuone-preferences - INFO - Starting Ubuntu One Preferences
2011-01-11 08:26:31,825 - ubuntuone-preferences - INFO - Got credentials for Ubuntu One
2011-01-11 08:36:07,694 - ubuntuone-preferences - INFO - Starting Ubuntu One Preferences
2011-01-11 08:36:10,177 - ubuntuone-preferences - INFO - Got credentials for Ubuntu One

The thing is, the network connect seems fine (the log says otherwise). I have reinstalled 10.10 now three times completely to see if there is an install issue, same problem occurs. I am stumped completely. All my PCs