dchroot -a -- 'apt-get update'
$E dchroot -a -- 'apt-get -u -y dist-upgrade'
dchroot -a -- 'apt-get clean'
-$E pbuilder --update --basetgz /home/martin-scratch/images/natty.tar.gz
+$E pbuilder --update --basetgz /home/martin-scratch/images/quantal.tar.gz
$E pbuilder clean