This made it so I could not rearrange menus, which was a total drag.
Anyway, I discovered a fix, and its easy (actually WP DEVS--if you haven't done so already, you should do this, and roll it in to the next release)
Open [site root]/wp-includes/script-loader.php
change line 62 to this:
$scripts->add( 'l10n', "/wp-includes/js/l10n$suffix.js", array('jquery'), false, '20101110' );
Basically, we're adding the jQuery dependency to l10n script, so that jquery loads before it, fixing the problem.