Comment 8 for bug 203825

Frankly, I had no idea it was a GTK issue. I get the same results as the reporter #203825, GTK stops my login screens from popping up. Interestingly, they /do/ pop up given enough time (~2-3 minutes at 100% CPU).

I'll try to get a backtrace of my bug tomorrow, but I think the two can be merged. If this bug happens to be triggered by any GDM themes Ubuntu distributes (as opposed to our homebrewn), the severity of #147045 should probably be raised, as it at first glance stops users from logging in.