Better yet, try the WiKi >> http://wiki.maemo.org/Updating_the_firmware

You'll pro'ly need one of these:

http://tablets-dev.nokia.com/maemo-d...-downloads.php

...and then this:

http://tablets-dev.nokia.com/nokia_N900.php


However DNS is more likely to be a router or service provider glitch... unless you went a messing with the hosts file or suttin' via terminal.

Have you tried another WiFi access point?

It may also be simply a matter of changing the WiFi channel, although the pass through to the lappy is a head scratcher.