If you click on KMenu->System->Configuration->Hardware->CD Properties
you will get a CD and DVD Preferences dialog.
On my system, I do have to wait until the system mounts the cdrom. Remember that with cd-roms, it is the filesystem on the disk that is mounted. So if there is a problem with the disk, it will not mount.
For comparison, here is the /mnt/cdrom entry from my /etc/fstab file.
Code:
/dev/hdc /mnt/cdrom auto umask=0022,user,iocharset=iso8859-1,codepage=850,noauto,ro,exec 0 0