gksu doesn't allow escalating priviledges, dialog box freezes
Hi, I'm having several problems with Karmic Alpha 64 bit, one of which is that I can't run any application that requires escalated priviledges. When I try to run synaptic, for instance, I get a dialog that says:
Failed to run /usr/sbin/synaptic as user root.
Failed to exec new process. Exec format error.
Running sudo <anything> from shell does nothing, just gives me another command prompt.
Other problems are that I the gcc compiler doesn't work and I can't switch users, but I only mention those here in case they are somehow related. What should I do to figure out what is the problem?