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Thinking about this in more detail, I offer the following:
Go to the Home screen and touch and release(tap) a book from the carousel while noting the tap doesn't register until you remove your finger... In other areas Hold it too long and it registers as a long tap or selection depending on where you are in the interface. Touch and hold wishlist and it highlights the selection but doesn't go there until you release, etc.
I think perhaps the drain is just the neonode hardware keeping the IR LEDs on continuously because a "touch" (interruption) occurred before shutdown and it's waiting for a release. Because it's in the middle of sensing an event it may ignore whatever command is being issued to power it down. A 1000 mah battery like we have would be depleted in about 72 hours if the IR LEDs and neonode are drawing only ~13.5 ma.
Like I said, wild ass guess based on what others have directly observed, but it might be close to explaining what is actually happening. I don't think it really is a case of a firmware bug drawing excessive current. I think it's just a matter of the IR hardware getting stuck waiting for a "touch event" to conclude. My guess is that under normal usage the IR LEDs are time multiplexed possibly at a lower power level or PWM ratio to create a lower powered grid of IR beams, but may be maintained continuously until whatever is breaking the IR beams is removed once a touch event is sensed which would explain depleting the battery in 72 hours or so.
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