From time to time my Gnome 3 shell or some parts of it are crashing. Gnome sees a time out and is forcing the user to logout **without** other possibilities (fail whale is providing this dialog).

*"Oh no! Something has gone wrong."* See [superuser](http://superuser.com/questions/585635/fedora-18-in-oracle-virtualbox-on-windows-vista) for a screenshot.

Is there a way to stop gnome from doing that? Since the other programs are still running and working fine... In my case its clearly a time out, since a scientific analysis eats up all memory and after its done Gnome has a hard time to recover. 


(I experienced also these crashes, when I was using some (combination of) extensions which are buggy. In that case the probably only or best solution is to not use those extensions... also considering the posts I've read about this.)