I found the problem. When upgrading to Dapper, a new user called haldaemon was created. However it was not part of the cdrom group, and so couldn't access /dev/cdrom. I solved the problem by typing the command:
adduser haldaemon cdrom Now it works fine. I still think it's an upgrade bug. The haldaemon user should have been added automatically. -- CD not auto mounted on insertion https://launchpad.net/bugs/62952 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
