I agree that it smells like a software bug. I say this because the symptom is always the same but happens eratically. I have extras-devel stuff so there is room for irregular software bugs.

I just find it facinating how connected the charging firmware seems to be to the userspace. Why is the charging control circutry accessible to the actual OS.

So you're saying it's charging then fully losing it's charge, all in one night? and whenever did it take 6 hours on a wall socket to charge without hitting trickle mode (threshold is 95% of battery capacity i think) nah.

Having seen the mounting underneath the mirco usb socket on the circuit board, it's entirely possible to break on of the 5 contact lines without snapping the main mount.

Mine still sent large data transfers as well, it did exactly what you have described for weeks, during which I could find no-one else talking about the same problem, then after just over a month, the wall socket stopped working entirely, then about 3 days later, the usb stopped transfering data, and I had to wiggle the socket to get it to pick up a charge.

Make of it what you will, but i'd get a battery charger to be safe because you don't want to get forced into a HTC situation

Charging is somewhat of an ambiguous term in this case :P
I mean that the phone claims it charged throughout the night i.e. i plug it in and it says "battery charging" and I see the battery animation. Furthermore batterygraph draws a solid green line at the bottom of the graph when the phone is connected to a charger, and this line is not interupted throughout the charging period, thus the phone is getting power all night long. I think it has access to the power, but somehow decides not to charge.

Then there is also the decrepency to your story that my phones being doing this for a year. Should the usb port come out some day i'll send it for warrenty repair becuause ports breaking off is not normal wear and tear.

i think you are in denial my friend, this sounds exactly like the experience many of us have had with the faulty hardware.

hope you resolve your problem soon.

The software is very bad at noticing problems caused by intermittent problems such as the usb port glitching or becoming lose, or the charger/charge cable glitching, etc..