The buggy libxfont_1.4.5-1 package is now replaced and a working version is published in Quantal repos.
Here: https://launchpad.net/ubuntu/quantal/+source/libxfont/1:1.4.5-2
[B][SIZE=2]Changelog
libxfont (1:1.4.5-2) unstable; urgency=low * Ease sync for Ubuntu: strip -Bsymbolic-functions from LDFLAGS (LP: #992745). -- Cyril Brulebois <email address hidden> Thu, 03 May 2012 19:59:46 +0200[/SIZE][/B]