Does your M11xR1 sometimes lock up when bumped? Got a Hitachi drive with accelerometer/drop sensor?

My M11x often hard-locks when it's bumped leaving me stuck looking at whatever was on the screen. I usually find it that way when I close the lid and flip it over (keeps the vents clear if I need to walk away for a few minutes and leave it downloading or playing something). It has also happened when I have set a glass down and bumped the side or when my little dog clamors over my lap. It seems that it can happen no matter what I am doing, though it's hard to get it to happen on purpose.

Dell/Alienware insists that it is caused by the accelerometer/drop sensor included with the Hitachi HDD. They even uninstalled the utility leaving "Unknown Device" in my Device Manager as if they don't want me using it. The thing is, I *DO* want to use the sensor and I specifically buy Hitachi HDDs with it. I don't think that's the problem because I can launch the utility and watch it engage the sensor without issue when I hold and lower the notebook and it has never locked when I simply moved it (only a slight bump).

I'd like to know if anyone else has this problem and whether or not that have the Hitachi HDD + utility. The Control Panel utility is even customized by Alienware and yet they take it off when they get their hands on your PC!

If it isn't obvious, I set my lid sensor switch to "do nothing." I also set my power button to "Sleep." If I manually tell it to sleep and then I close the lid before it finishes, it will trigger a distinctly different kind of hard lock (black screen, high fan, AlienFX stuck on). Obviously, it isn't "doing nothing" in that case. Can anyone else duplicate this?