Since going to 6.0 emacs-24.5p5-gtk2 has randomly and infrequently been non responsive and consuming one CPU.
The only way to stop is a kill -9. This is on a 32 system, and the only thing strange I did was to use gsettings-desktop-schemas-3.20.0p1 to stop the errors on emacs initial load Is this a known problem, and if not any ideas on how to track the problem down.