Originally posted by jailbait
Edit /etc/fstab and remove the automount parameter from the line that describes your cdrom.
The actual fstab line looks like this (I've broken it down for screen formatting):
noauto,fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0
Hmmm. It says noauto in there, so it's not mounted at startup. But this new-to-kernel 2.6 feature of hotplugging makes it recognized when a disk is inserted and then it's eventually relayed to KDE who'll pop up a window.
I have the same problem with hard disks connected by means of an IDE to USB adapter. As soon as the disk is connected the kernl works then KDE pops up a window with the content of the drive.
I don't have the impression that it has something to do with fstab.