This is also a problem that I have on my Phat using nitePR rev K STABLE running 5.00 M33-6.
What's werid is that using my Slim using nitePR rev K STABLE running 5.00 M33-6 it doesn't do it.

I take a screenshot on both and my Slim does exactly what its suppose to and freezes for a split second, but my Phat freezes for 30 seconds and then the system shuts off.