Son of a...

21197   2013-12-17 20:06:35   2:40:22   1075489111   70632   0.00158121   275487   25.06234798    invalid

I don't see why though. The last one that was invalid said it was orphaned, but this one doesn't show any issues and that it belongs to Slush - what am I missing?

http://blockchain.info/block/0000000000000003c2a2788e78db62900991aa9357a248d7b88d276ecbaa7cfd?site=slush