I know this sound crazy but have you tired running Task Manager or Resource Monitor before you tried running the IDE?
Some times with Task Manager-> applications, you can gain control with the .
I had a problem with things hanging, and I used the to gain control. My problem had to do with my desktop memory.
One of the Geek Squad pulled all my memory and cleaned the contacts on all of them, and put them back into my computer and that fixed my problem.
I really doubt that's your problem this time around, but the might help.