Bart is totally right. It's a nogo for compiling mysql 4.1 with 5.0 libs ;) ** Changed in: mysql-dfsg-4.1 (Ubuntu) Priority: None => Wontfix Status: Confirmed => Rejected -- [LIBMYSQLCLIENT] mysql-dfsg-4.1 links against old libmysqlclient https://launchpad.net/bugs/45069