As long as we have the nit combs out, and while coldfingers forgot to mention it, you might want to add a specific ordering for the keys if their values happen to have the same timestamp

      sort { $b->[1] <=> $a->[1] 
                      ||
             $a->[0] cmp $b->[0] }
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coldfingers will have to decide whether they want to swap the $a and $b, now that sulfericacid has mentioned it matters. Oh, and I really think that should be a <=> first as the value returned from str2time (thank you for pointing it out!) seems to be a number. Don't want any problems with dates before September 2001.