Comment 5 for bug 742683

Be careful about sedding /etc/default/keyboard; that information is also in debconf. /etc/default/keyboard is certainly *meant* to be canonical, so this approach ought to work, but desync here is a possible source of bugs so you should test multiple successive upgrades to make sure. Also be careful to edit both /etc/default/keyboard and /etc/default/console-setup, as keyboard configuration may be in one file or the other depending on maverick->natty (or lucid->p) upgrade order.