I've had this problem on both a MacBook and a MacBook Pro. Today, it is a nice fresh install of Matlab_R2011b on my relatively new and uptodate MacBook Pro. When I try to start up Matlab, it starts the X server, gets part of the way there, and then hangs. In the menu bar, I see "Matlab", but no further menus, and no window. In /var/system.log, I see:
StartMATLAB: 2011-11-30 14:46:29.899 MATLAB[21854:617] Process manager already initialized -- can't fully enable headless mode.
The Matlab icon is present, the dock tells me matlab is running, but no window appears.
I used to get this on a MacBook running R2007b. I used to work around it by closing everything I had open, restarting, and launching Matlab as the first programme. I am no longer willing to do that, as it costs me about an hour each time, and I lose track of my work in dozens of other programs.
Is there a way around this infuriating glitch? Help greatly appreciated.