Comment 802 for bug 993187

I am also having an issue where my system completely locks up. Mouse / keyboard are unresponsive and I am unable to ssh in from another system.

This is a new build with all new hardware:

ASUS H81I-PLUS Socket 1150 w/ Intel H81 Chipset
Intel Pentium G3220 Dual-Core Processor @ 3.0 GHz
Team Vulcan 8GB (2 x 4GB) 240-Pin DDR3 1600 (under clocked to 1333 by the BIOS)
Intel 330 Series 60GB SSD
on-board Intel graphics connected via HDMI to a 24" Samsung LCD TV

I was originally running openSuSE 13.3 w/KDE, but as this system is meant to be a multimedia system, it was causing more trouble that I wanted to deal with. I do not recall it freezing at any time.
I then installed Kubuntu 13.10 64bit as the multimedia support is better than SuSE. This is when I started to get multiple lock ups. I thought maybe it was due to something not being happy with 13.10, so I installed 12.04.3 LTS w/ KDE 4.12. I also removed the 8GB 'Team' memory and installed a single 4GB ADATA 1333MHz DIMM.
This appeared to have resolved the issue, but it locked up on me three times yesterday. Once while using Amarok (remote mySQL database & collection on a FreeNAS NFS share), once while just using the desktop and another while attempting to play an 800MB .MKV file in XBMC standalone (remote mySQL, file located on a FreeNAS NFS share).
I've checked the various logs, and there does not appear to be anything of any relevance as nothing 'crashes' exactly, the entire system just locks.

I've disabled all power management features & functions.
No wi-fi hardware installed / enabled.
Cat 6 gigabit network connection.
Microsoft Sculpt bluetooth keyboard w/ ASUS bluetooth dongle
- paired with bluemon
Microsoft ARC wireless mouse w/ MS wireless dongle