Created attachment 107624 [details] System Monitor view.jpg After a while of having the computer on, a process not shown in the system monitor starts taking CPU cores till the entire desktop completely freezes. Then after a minute or so it unfreezes. Going to (System Settings -> Search) and unmarking "Enable File Search" solves the problem.
No longer happens.
Sorry, ignore my latest commend. I was referring to a diferent bug.
I have the same problem. My system freezes and I can not do anything...
*** This bug has been marked as a duplicate of bug 400704 ***