Version: (using KDE 4.0.3) Installed from: Fedora RPMs OS: Linux When I insert a disc, the KDE Daemon opens the "What to do?"-dialog. when i choose "open in new window", dolphin opens and an error occures: "URL cannot be listed system:/media/sr0". I don't know why the dialog wants to open the false url, because when i open the disc via the "new device notifier" in the taskbar, the right url "/media/Disk1" is used and it works...
Do you also have KDE 3 installed on your computer? This sounds like kded from KDE 3 is running during your KDE 4 session since I think the "What to do?" dialog is replaced by the device notifier in KDE 4.
Yes, I am running KDE 3 too, because some apps run with KDE 3 such as kdebluetooth, ...
system:// is deprecated on kde4
This was caused by a mixed KDE3/KDE4 session/installation.