[Bug 31968] umounting cd fails, hangs system

[unikob]

Public bug report changed:
https://launchpad.net/malone/bugs/31968

Comment:
So I tried this in freshly updated dapper (of 15.3.06), and I get the following: first cd mounts normally and doesn't like to unmounted at first. Second try unmounts and ejects cd.
Second cd mounts but doesn't show on desktop. It is accessible through /media/cdrom0 but not through cd-rw/dvd-rw icon under Places->Computers. Can not be unmounted via graphical tools, but ejects nicely when eject /media/cdrom0 is given. Third CD same as the second one. Attached kern.log, sys.log and var_messages of relevance.