User-Agent:       Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.0.5) Gecko/2008121300 SUSE/3.0.5-1.1 Firefox/3.0.5

Launching other apps from a super user dolphin session (kdesu dolphin) is not possible and only produces a graphical popup:

"KDEInit could not launch '/usr/bin/ark'."

A similar behavior is observed when e.g. dolphin is started from a shell:

mader@santenay:~> su - doe
Password:
doe@santenay:~> dolphin
dolphin(30044): Attempt to use QAction "close_tab" with KXMLGUIFactory!
dolphin(30044): Attempt to use QAction "show_info_panel" with KXMLGUIFactory!
dolphin(30044): Attempt to use QAction "show_folders_panel" with KXMLGUIFactory!
dolphin(30044): Attempt to use QAction "show_terminal_panel" with KXMLGUIFactory!
dolphin(30044): Attempt to use QAction "show_places_panel" with KXMLGUIFactory!
doe@santenay:~> kdeinit4: preparing to launch
No protocol specified
: cannot connect to X server :0.0
No protocol specified
No protocol specified
kdeinit4: preparing to launch /usr/bin/okular
No protocol specified
okular: cannot connect to X server :0.0

So as it seems there is something wrong with the permissions to use the running Xsession...

Reproducible: Always

Steps to Reproduce:
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