Another rant regarding horrible battery life. Have had the N900 for over two weeks now. The battery just doesn't seem to last for more than half a day MAX. Tried almost everything that various people have suggested.
Am on AT&T network. So, switched the network selection to GSM only.
Did not connect to any internet (WiFi or AT&T) Rebooted prior to that.
3 phone calls (2-5 mins max)
Vibration : Off
Notification Lights: Off
Tap vibration: Off
Back light intensity: 2/5
Caller tune: Nokia ~ 50% volume
WiFi/Internet connection: Disabled
Bluetooth: Off
GPS: Disabled/OFF
All widgets turned off.
Only one desktop has any 4 shortcuts: Phone, contacts, Email, Ovi store (still not up for N900 -- but that's a different rant)
The other desktops -- blank.
The only thing I didn't do that was recommended was to change my SIM card (16months old). This SIM card works perfectly well with my N95 8GB and I get atleast a day and a half out of it.

Even after all of this; My phone complains of dying due to lack to charge after 6 hours. Spent ~$600; not using any apps (forget the ability to handle multiple apps);

Would welcome any kind of suggestions.

Thanks,
Sean.