I've come to have some problems with Bluetooth. If I have it disabled, it often has a pop-up that tells me Bluetooth is disabled and if I want to activate it. That's fine, although Bluetooth is seldom needed. It's mostly just an annoyance that probably shouldn't be there.
The bigger problem comes from Bluetooth freezing up the N8. I've had it ask at the main screen, the camera, pretty much anywhere it wants a connection (although it does have both LAN and T-Mobile's connections available). One big issue this seems to be causing is freezing. I don't know how the code is set up, so I can't really comment on details, but I'd say roughly 30% of the time, this pop-up will lock up the N8. The only way to fix it is to force the N8 off and restart it. Because this happens on nearly a daily basis, it's getting to be quite annoying.
I assume I can just turn Bluetooth on and not run into the issue, but at the same time I don't want to be using a device that I'm not using and just sit there draining the battery.