after consultation with Adri2000 on irc, I was pointed to http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=385464;msg=15, which indicates that a rebuild is enough for fixing this bug.
-- Missing libobrender.so.1 -> unable to launch obconf https://launchpad.net/bugs/62346 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
