I forgot to mention that one of the two partitions is encrypted with cryptsetup (/dev/sdb2). This disk worked on Dapper and Edgy on the same computer.
-- USB mass storage (ata hard disk) does not get mounted automaticly when hotplugged https://launchpad.net/bugs/73757 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs