T60/61 Hang on power loss to dock

I have both and T60 and a T61p.  Both of them will hang every time when I simply remove the power cord from my docking station while the computer is docked.  I would expect the computer to simply run off the battery until it is drained and hybernate according to the power managment settings.  Instead it hangs the instant I remove the power.  This is an issue because it means I need to install a UPS on a laptop in case I loose power at my house which seems crazy.
Any thoughts/ideas? 
The computers sound card is still working as it does make the normal beeping noise to signal power removal and re-insertion.  Fn-PgUp will turn the mini-light on but no other functions/action seem to work (including Ctrl-Alt-Delete).
Thanks
Ryan

Hi rcmaross, welcome to the forum,
A dock needs power for the usb hub etc, I think what may be happening is that windows has a problem with the unannounced removal of hardware. I presume that when you hot-dock / undock you don't have a problem, just when the power dissapears?
Andy  ______________________________________
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