I've commited a tool (maintenance/transstat.php) to CVS that makes the localization statistics prestented here: http://meta.wikimedia.org/wiki/Localization_statistics, if any of you have some free time to waste you could help update the current translations or help prune old redundant messages from them (see bug 2502 (http://bugzilla.wikimedia.org/show_bug.cgi?id=2502)).