I've had the same issue with three different machines, on all releases of SXCE since build 58. One machine used to kernel fault instead of switching off, the others will just hang after syncing file systems. And the system fan then goes to full speed and the machine has to be hard shut-off.
Anyway, good to know there's a way to show verbose shutdown messages, I will try that, too and get back. Cheers, h -- S. Hakim Hamdani [ML] / Eroteme.org