I was also experiencing this. It seems that in my case a file got corrupted and that caused a fatal error in the syncdaemon. The file in question was $HOME/.local/share/ubuntuone/syncdaemon/tritcask/13?????????????.live.tritcask-v1.data (can't remember the actual number at the beginning of the file name). Deleting the file solved the problem for me.
It would be nice if something like this didn't cause such a catastrophic failure. I'm attaching my controlpanel.log and syncdaemon-exceptions.log log files for reference. ** Attachment added: "controlpanel.log" https://bugs.launchpad.net/ubuntu/+source/ubuntuone-client/+bug/792255/+attachment/2204536/+files/controlpanel.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/792255 Title: Ubuntu One error: DBusException: org.freedesktop.DBus.Error.NoReply To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntuone-client/+bug/792255/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs