Wow, thanks for the quick answers, hints and tips!

Is the Password Safe compatible with Keepass databases? I'm using Keepass in my PC and I'd like to use the same database file with my N900.

Is it possible to do a 100% discharge? Shouldn't there always stay a small charge because the N900 shuts itself down, it doesn't just suddenly turn off. I've used it until it shuts itself down before giving it a long recharge, this is what I was taught to do with the old phones... =)
Can it be harmed by doing this way?

I'll hope the battery life gets better by time then. If it doesn't I'll start looking the problem.