http://www.lemmingsforums.com/index.php?topic=522.msg10897#msg10897">Quote from: Simon on 2011-06-30 07:29:55
The generally accepted hierarchy is to
rank by lems saved first;
if equal, rank by skills used;
if equal, rank by time used;
if equal, rank by whoever achieved the record first.
New scores added to the leaderboard will now appear in the above order. Existing scores haven't been reordered - this will happen naturally as more scores get added using the new ordering method.