Strange: after removing all the packages mentioned above (all that mediawiki1.7 are dependent on and the ones mentione in the apt-get command above, gksudo gives the same warning but is able to open gedit in su mode.
Starting gedit with sudo gives no warnings and works.
Strange: after removing all the packages mentioned above (all that mediawiki1.7 are dependent on and the ones mentione in the apt-get command above, gksudo gives the same warning but is able to open gedit in su mode.
Starting gedit with sudo gives no warnings and works.