Description of problem:

I happen to have here a CD written in a default format on a Mac OSX machine.
Dropping it into a drive does not result, contrary to expectations, in
an automatic mount.  A bit of digging in a mount manpage how an 'auto' file
type really works (not 'autofs'!!) reveals that mount tries filesystems listed
in '/etc/filesystems' and a content of this file currently looks like this:

ext3
ext2
nodev proc
nodev devpts
iso9660
vfat
hfs

The required filesystem happens to be 'hfsplus' and adding it at the bottom
of this list does result in an automatic mount on an insertion of CD and
after that 'hfsplus' shows up, not that surprisingly, in an output of
'cat /proc/filesystems' too.  Currently this does not mean that nautilus is
noticing a new mount but this looks like an unrelated breakage.

I would suggest that 'hfsplus' should be in '/etc/filesystems' list from
the very beginning (especially that 'man mount' fails to mention it, see
bug #172817).

BTW - 'man mount' claims that '/etc/filesystems' entries marked 'nodev' are
ignored so why they are there is not clear.  Something else looks at this file?

Version-Release number of selected component (if applicable):
setup-2.5.47-1.1
but this actually applies equally well to FC3 and FC4.