storage media dialog (7.10)

[Michael Bach (gmx)]

Hello all,
I have recently upgraded from 6.10 to 7.10. Everything went ok, with the 
  exception of a few glitches. Most prominent fail is the absence of the 
media dialog which appears when a new medium (cd, usb-drive, 
sd-card,...) is attached to the system (The one where kubuntu asks what 
to do with the content).
I can re-initiate the dialog if I just change a minor setting. For 
example if I check "Enable medium application autostart after mount", 
click apply, uncheck "Enable ..." and click ok.
This is in "Settings"->"Control Center"->"Peripherals"->"Storage 
Media"->"Advanced"
Now, after plugging in an external disk, the dialog shows up as normal. 
After a reboot the dialog does not show up again until I repeat the 
above procedure.
Anybody know how to fix this?

Mike