Hari - I'd be happy to send mine too. It only happens occasionally, but doesn't seem to have any pattern behind when. Probably once every 2 weeks? And it does hard lock, can't do anything, and it stops routing traffic from the internal to external networks - LEDs on the keyboard flashing.... It happened only 2 days ago, so let me know which files you want and I will send them over...
Col
EDIT - just saw your reply, looking into it right now!