Also I did serf update as Bug#716793, please dget http://www.mithril-linux.org/~henrich/debian/package/temp/serf_1.3.2-0.1.dsc and check it, too.
I've actually already seen it... But it was after I've built it by myself... :)
It seems your package has cleaner debian/rules so I would prefer it to be uploaded to Debian :) just 1 note: you have a typo - "overrdie_dh_auto_clean" :)