No, it doesn't. However, the answer is not quite as simple as that There are rumours that the wifi chip also has bluetooth capacities. So somebody may hack a solution, although don't hold your breath -- the wifi chip is a new variant of the atheos chip, and that's proprietary. So no open source drivers exist for it right now.

So your only solution is a dongle, although I've yet to see anybody report any kind of Bluetooth working over on eeeuser.com forum (I've lost my BT dongle so can't test ). The Eee has three USB ports and is just another x86 laptop in terms of hardware so it should work OK. But, you know, these are early days for the Eee. Additionally, I can't see any bluetooth functionality built into the default operating system (not even for file sharing).

As for your lagginess using a BT keyboard on your N800, I don't think this is caused by the keyboard itself. I have the same lag on my 770. Are you talking about typing ahead of the cursor when the sentence is more than a few lines long?

I'm hoping that the new OS2008 update will fix this, if only because of those extra 80MHz, but perhaps also because everything is much more GTK.