Ubuntu One has worked fine for me for several weeks and I now have 8.2 GB of files in the clouds. Then, last night, Ubuntu One stopped working. When I fire up System->Preferences->Ubuntu One, It tells me that I have 8.2 GB stored (13.2 %) and the my status in Unknown. I've tried Restart to no avail. I even tried Remove, followed by clearing the password ring and starting over. Still nothing. I've run out of buttons to push.