The reason I'd like to not use sudo at all, is that these two machines are 'public' machines and if someone knows a little about Linux, they might want to start changing a lot of things and create more work for me, one of the reasons I installed Ubuntu in the first place instead of re-installing XP. I have them set to auto-login, so they won't need the password, so sudo might not be a problem, but I still don't know why starting GUI-progs as root is failing when I haven't had problems with it earlier... Haven't had time to check the previous suggestions yet, though.

Stig