Problems automounting CDs

[Carl Riches <riches ms washington edu>]

I am having a problem on a fresh installation of RedHat Linux 6.1.  I have
done a fresh installation on two machines.  On one machine, the CD-ROM
drive is automagically mounted for the user logged in on the X console
when a CD is placed in the drive, regardless of what user is logged in and
what window manager they are using (GNOME, KDE, fvwm, fvwm2 are the ones
tested).  On the other machine, this only works for root.  I am unable to
determine what agency enables this feature, and how one configures it.

Both machines have this as the /etc/fstab entry for the cdrom:

  /dev/cdrom              /mnt/cdrom              iso9660 noauto,owner,ro 0 0

One of these machines has an internal zip drive.  Here are the boot
messages from this machine for the CD-ROM and the zip drive:

  Mar 13 08:46:57 spc142 kernel: hdc: TOSHIBA CD-ROM XM-6402B, ATAPI CDROM drive 
  Mar 13 08:46:57 spc142 kernel: hdd: IOMEGA ZIP 100 ATAPI, ATAPI FLOPPY drive 

Here are the boot messages from the other machine (without a zip
drive) where automounting is working:

  Mar 13 09:06:02 mpc33 kernel: hdc: SAMSUNG SC-140B, ATAPI CDROM drive 

I have looked at the archives for this list and have not found anything
that was about this problem.

Can anyone help shed light on what could be causing this behavior?

Thanks,
Carl G. Riches
Software Engineer
Department of Mathematics
Box 354350			voice:     206-543-5082 or 206-616-3636
University of Washington	fax:       206-543-0397
Seattle, WA  98195-4350		internet:  riches ms washington edu