About battery life:

I've used N900 proto now over one month.
The best time I have achieved is 36 and half hours with light use (2G on and wlan on about 5 hours). In normal business use the battery holds about 12-15 hours. Sometimes the battery drains in 4 hours and in that case the device is very warm. The same happened with E90 and E75. I guess it has something to do with 3G handshaking loop?