When closing system configuration windows from an X server emulator, the system configuration panel crashes causing a core file RDX_RO.core in /var/adm/ras/dirTalk
Resolving the problem
To do this, open a child window from the System Configuration panel, such as Signaling Type. This window should take focus, so that you cannot click back in the System Configuration window until the child window (in this case Signalling Type) is closed. If you can click in the System Configuration window whilst a child window is open then your emulator does not properly support modal type windows.
You should change to an emulator which fully supports the modal window specification.