Ah, crap...

I just recently upgraded to Linux Mandrake 10 CE, and whilst my DVD-ROM has worked with all other versions of the distro, it's stopped working now. Actually it was okay for a while, but now I just can't get it to mount properly - I keep getting "device busy" messages. I've set it up with supermount like the CDRW I have on the same machine (different mount point obviously - the CDRW is /mnt/cdrom and the DVD is /mnt/cdrom2). Anyone got any ideas or has my hardware given up the ghost? I don't have windows on this box so can't test it with a different OS.