Hello,

I just experienced the same problem. Could you solve your problem?
If so could you post the solution?

Some data of mine:
I'm in the groups: 

groups=10(wheel),11(floppy),18(audio),19(cdrom),27(video),35(games),85(usb),100(users),250(portage),443(plugdev),1000(rh),1001(wireshark)

CD/DVD device:

$ ls -l /dev/cdrom
lrwxrwxrwx 1 root root 3 2008-05-09 04:45 /dev/cdrom -> sr0

$ ls -l /dev/sr0
brw-rw---- 1 root cdrom 11, 0 2008-05-09 04:45 /dev/sr0

dbus and hal are running. USB disks, cameras or MP3-players are
correctly mounted. Only CDs are not.

Tips, comments highly appreciated.

Thanks in advance.

W. Canis