I am getting a few spammers comming to my blog. So I thought that if should be time to upgrade wordpress to a new version as I am hoping that this upgrade will keep spammers away.
So that was easy:
download http://packages.debian.org/wordpress dpkg -i wordpress_1.5.2-1_all.deb
It will fail with an error about not able to find
cp /etc/wordpress/wp-config.php.dpkg-old /etc/wordpress/config-XXXXX.php
It worked for me, good luck!