shortcut alt+cmd+m is blocked I use IntelliJ IDEA and the shortcut I am using to "extract a method" seems to be blocked by another application. The shortcut itself is mapped by IntelliJ IDEA.

OS X: 10.10.2, MacBook Pro with english keyboad (and layout)
the shortcut: alt+cmd+m

When I press this combination nothing happens, no other app is reacting either.

I already unchecked all shortcuts in the system preferences that could block IntelliJ IDEA shortcuts. I also quit almost all running applications, no success.

Is there a way to find which program could be blocking this shortcut. I am pretty good with the shell in case there is some find/grep stuff to make this happen.
it was divvy which i use to maximize windows. so my fault as i chose this shortcut a while ago .... shame on me.