Version: (using KDE 4.2.2) Installed from: Ubuntu Packages First of all, I don't have the slightest idea which KDE component causes the bug, which is why I chose "unknown". Perhaps someone with more knowledge could move this to the correct category :) Now, for the problem: Since I upgraded my system to KDE 4.2.2 (Kubuntu 9.04 RC), I can not use the eject button on my CD/DVD drives anymore as long as the disk is mounted. I have to either manually unmount it and then use that button, or I have to use the "eject drive" button in Dolphin or the plasma removable devices widget (which correctly works). I used KDE3 before and was able to just eject a mounted disk by pressing the button in the drive, it obviously automatically unmounted the disk.
*** This bug has been marked as a duplicate of bug 164255 ***