[plug] help with Redhat 7.2

[Rebel]

Hi this is my first post hope someone can help
I have just upgraded Redhat 7.1 to 7.2 and have a prob with my cdroms (one
is a burner and the other a Dvd).When I put in a disk they don't automount
anymore and when I click the icon or try to mount them any other way I get
an error message saying
mount: /dev/cdrom : unknown device
they worked ok in 7.1 anyone have an idea
Cheers in advance
Rebel