It looks like the problem was solved by the latest updates of Kubuntu Edgy, at least as far as the Kubuntu 32bit is concerned.
-- Mounting Problems in Kubuntu Edgy after the Xserver is restarted https://launchpad.net/bugs/58552 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
