Comment 7 for bug 437165

Same problem here. Upgraded to Karmic yesterday and updated right now.
U1 worked well for a day, then, after a system-crash, I'm now in the authentication loop. I tried to remove and reinstall by following https://answers.edge.launchpad.net/ubuntuone-client/+faq/778 without results.

Other detail:
The crash was not related to U1, I guess, but to my old graphic card problems (it happened during a screensaver-preview), but maybe U1 was syncing during crash (?).