I have been thinking of putting this for quite some time now. By default no user (other than root) on Fedora 11 has the permission to mount CD/DVD and or ntfs/vfat partitions. So HAL automount does not work for these.
Here is something you can do to fix this:
Open System-> Preferences -> Authourizations
Now, go to org -> hal -> storage and make the changes to suit your needs. You can add or remove a particular user for the operation with the Grant or Block buttons or for all the users system-wide with the Edit button.