[PROBLEM] Xbmc Frozen over Night

[Unitec]

Software
XBian version: 1.0RC2
XBMC version: 13.2
Overclock settings: 3 Xbian

Hardware
Power supply rating: 5V 2000 mA
RPi model (model A/B 256mb/512mb): B+
SD card size and make/type: Sandisk Extrem 8 GB
Network (wireless or LAN): Lan
Connected devices (TV, USB, network storage, etc.): 1 TB Hitachi 2.5 Zoll Hdd via Aktiv USB3 Hub

Logile
Link to logfile(s): http://www.d-a-l.de/xbian/xbmc.log
http://www.d-a-l.de/xbian/xbmc.old.log

Problem description:
I Started the Indexing Process with Scraper and the next morning the Xbmc was "Frozen". I could do nothing via Connected Mouse. But via SSH i could reboot the Pi.
After the Reboot Xbmc has forgotten my Screen settings ( Kalibration Settings ).

No Overclocking ( Standart from Installation )

If you want/ need more Info Please leave an Comment.

How to reproduce:
Go to bed an Sleep for the Night.

Thanks for Your Time to Help me.
Im Sorry for my Bad english.