My N900, which was bought just some weeks ago, has had very low battery life since the beginning. Apparently those who bought N900 earlier and had the older firmware installed by default, experienced much longer battery life initially, and are now seeing a decrease of battery life with the latest update. Those who had newer firmware installed by default (like me) already had the problem which seems to eat battery unnecessarily much, and do not experience any difference with the latest firmware update. Hopefully it will be fixed with PR1.1