File sync status update
A few Ubuntu One users have reported a bug (#462828) in the desktop client software that could cause files to become unavailable in some circumstances. As a temporary measure, we have updated our server to display a “Capabilities Mismatch” error to prevent files from becoming unavailable to users.
A client software update will be released very soon in the update channel. Manually running Update Manager will update your client to work with the server and fix the root cause. Throughout this period, all files are still available from the Ubuntu One website.
Contact syncing and tomboy syncing services have not been affected by this issue.
UPDATE: A new client is available now for beta PPA users running 9.04 and 9.10. More updates coming soon.
UPDATE: The updated Ubuntu One client software is now available to those running Ubuntu 9.10 and not using the beta PPA. Please run Update Manager to install the new software.