This looks similar to bug #30291. Can you try the work-around listed towards the bottom of the comments and see if this is the same issue?
** Changed in: firestarter (Ubuntu) Status: Unconfirmed => Needs Info -- Edgy Eft: GUI Firestarter wont start after adjustment sudoersfile https://launchpad.net/bugs/68537 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs