Happens. Just wait.
The funds for this specific wager included as input a transaction that itself had not confirmed. SatoshiDICE puts itself at risk of a double spend attack by revealing win/loss when a wager includes either spammy transactions or unconfirmed transactions. So once the wager transaction got a confirmation then that is when SatoshiDICE processed the wager and the payout followed immediately and was confirmed in the following block.
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http://satoshidice.com/full.php?tx=8d53dc3b2d470c9458bde6b87345b938c1d2ad6e1a2da1a172e66c3f3ccf4dbbSo to avoid this from happening in the future, use a client like Bitcoin-Qt that won't let you spend unconfirmed funds. If you insist on using Blockchain.info/wallet for this, then there remains the risk of this type of scenario happening. There's nothing that will speed it up, so just be patient.