I had problems with automounting. When I plugged in my MP3-Player it was not shown in system:/media. It could only be seen in /media. I recompiled everything (dbus, hal and ivman) but it still didn’t work. So i decided to test it under xfce. There I received a message about missing privileges. I searched the net and found the solution…
rm /usr/share/hal/fdi/policy/gparted-disable-automount.fdi
This also solved the problem in KDE.