I believe I've got something now. In the above comment I made earlier where the Wiki says
Perform any actions necessary to reproduce the crash. If the program hangs but doesn't crash you can press ctrl+c in gdb while the program is frozen and then continue with the next step.
was apparently not the correct thing to do as it would also freeze up gdb or at least it does on my machine. So I ran nautilus as gksudo nautilus started gdb as shown in the attachment. I'm hoping this is what you need.
I believe I've got something now. In the above comment I made earlier where the Wiki says
Perform any actions necessary to reproduce the crash. If the program hangs but doesn't crash you can press ctrl+c in gdb while the program is frozen and then continue with the next step.
was apparently not the correct thing to do as it would also freeze up gdb or at least it does on my machine. So I ran nautilus as gksudo nautilus started gdb as shown in the attachment. I'm hoping this is what you need.