[gamble]

Are u on a Nightly Build Clack?

Try flashing in back to frodo and try if it works there,
the NUC sometimes rl behaves weird...Problems occur that def. seem to be caused by
Bios even if u just played with the Settings of XBMC..

If it works in Frodo u can update to Gotham again..

As said i´m experiencing something similar, just made a few changes in xbmc and now i have the
problem that it shuts down only on 2nd attempt..