I think I installed this as a 'custom' installation, with both KDE and GNOME.
The symptom is that when the CD-ROM icon in KDE looks mounted, right-clicking and selecting 'unmount' unmounts the drive but leaves the icon displaying as mounted.
Perhaps it's a bad interaction with autorun?
yes, and it can't be fixed in the current kde. KDE 2.0 will solve this problem.