I don't know if this is directly related, but I've just reported the following bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=523882 sudo -i doesn't unset some environment variables -- Vincent Lefèvre <vincent@vinc17.org> - Web: <http://www.vinc17.org/> 100% accessible validated (X)HTML - Blog: <http://www.vinc17.org/blog/> Work: CR INRIA - computer arithmetic / Arenaire project (LIP, ENS-Lyon)