Eclipse shortcut for minimize / expand method has stopped working

Question

I'm using the shortcuts to expand / minimize methods quite a lot. For some reason all of these have suddenly (after starting Eclipse this morning) stopped working, and I'm a bit dumbfounded as to why. All other shortcuts (at least that I know of, and have tested) work just fine.

I've attempted to restart Eclipse and checked the error logs (nothing there).

Running latest (stable, not RC) Eclipse Juno on Ubuntu 12.04.

Answer 1

Turns outs it was a very simple (and stupid) fix: I had accidentally hit CTRL + numpad_Divide, this toggles "Folding" which in turn determines if it's possible to expand / minimize methods.