Well, that's it. I plugged my N800 in for recharging last night and it wouldn't. Recharge, that is. No funny sound, no animated battery icon, nothing. At first I thought I had a wonky charger, but my old 770 charged just fine from it.

So I tried a few things; different charger, swapped batteries with the 770. left the N800 with battery out overnight... nothing worked. It still won't charge. The charging plug looks normal, nothing is wobbly (at least, not wobblier than before), nothing looks weird inside, so I guess something must've broken deeper inside the tablet. I'd send it back, but... you know.