I have 12 transactions from 6/7/2012 that are still sitting unconfirmed in my wallet. The transaction IDs are not found on blockexplorer or blockchain.info, and the transaction ID on the payment sitting in my wallet does not match the transaction ID of the payment on Satoshidice.
MY SEND: 79c61ac77c36439f32cdc172e15a1666f7f35f5b3e16e4597491c474647ed3d7
MY RECEIVE: 18e77ef82e9be9fa82afd72c9da0e36d9d49ce03e44d02f1a55fcd8515ea65ac
SD PAYMENT TX: d2768db6562c0231da78188c282748b0b4219064792221ff6e32266ca07f01c1
MY SEND: 02636cacb8efe6b8c4005c3a7afb6a55c0458344d7ce54da53c6f85efb8855c8
MY RECEIVE: 7f1fe410a0209a82c476751e21cb124415219c37477c507acca4eda937134bdb
SD PAYMENT TX: ad1d52e036cd1d030a1436ec82a845110fb0a3cc27fe31adcd18fa2aa76ae56a
MY SEND: 4aac9912301e5ef52d96521948d1f1be3a5385f004232ea85d4c15b696009fbf
MY RECEIVE: b6d43e7f22d0eac61071ac1abee93e6665cb179aaa87ccc88705bee86ce1e45a
SD PAYMENT TX: 512d71e7fe2a673c467862264d40accb0b99ad5245756878d72920c1d73e0c47
MY SEND: 255795f7ab00c0b1d96304c525fcc907c22326bdc7dc9eeacb6e9bf704fdf720
MY RECEIVE: 1faa2d9e7911679856294efd7a0494877622b14ae7797ee4a0e0b5e1217567c2
SD PAYMENT TX: 1194903667fcbe9b601386ba34c90e3a63c6388288f6d50d1f4011a93acd7858
MY SEND: 801be45e210a1d57c7982d7cd74ea8212ba66ce1a7dad33daeaf976243c35b4e
MY RECEIVE: 2ccefa0ea4d43df5308fad136cf717a1dbfa8ef228342980a7b9f8f1aa1ca7b8
SD PAYMENT TX: 1aac64d6e8294e06a08669e09e5ac98c4d64eeab6c0ed2de4cc1c98926a92c29
MY SEND: 236ff462fda8b65a0e909ce1d8811dd5880f3319e776d004c02aaaf1602bd6f6
MY RECEIVE: 4a50653c48bd9bf61aa978a9c80031a549141856a753b710c747839421f59f76
SD PAYMENT TX: c443f91ab6c7e0bfe9e0848c7163daaa215b28caee124d8069786a5c1513be5f
MY SEND: 6ddcf6628a07a95397fa79c564773f041233b110e7e5405623d452ea22e5dc04
MY RECEIVE: d1c1f056c7edb6088dda96d2ac4efc331c5f1a3ba49baa75de46d687813560e4
SD PAYMENT TX: 05eb31104533837395bc118672fa04432ca495a081ea904f05270e1f9d5d5b80
MY SEND: c72108131b8d0f3d8e4d92da78ab77d6f3cc15621a1063eea8fb6d161cd00a9f
MY RECEIVE: 21a961b04202f57380aee647411498f7a9269fbc2bb5250df37a5ab870c3f881
SD PAYMENT TX: 7c02f1e7bc54eacc3c180b8ada456e9d9729a214705d2ba495507f10289cb419
MY SEND: e88a3b6a444fd68921867d2a887e766b9376839a872d784a0df371573551c008
MY RECEIVE: d7262d7ef08dacfdfc163659f23ea43fac6b78ae5cbfe714a9ac0cb0b8275f00
SD PAYMENT TX: e3b6962c26edb09c2be5da8040a896e013d78724791a2579f3b73dd30b191511
MY SEND: 45e8ef83c2b0a067930d57954912a23f57ff8ec1f16900c64d344e2ce82ad243
MY RECEIVE: 029da454bffbd3a6b53be671a1916885ac1c6abbc5f9121c1f632ae141b470c5
SD PAYMENT TX: b36b2f0497ce216eb3e96a618307ac8affe15bbf75d2f45b794dde7e8485b9f4
MY SEND: c57b438160d2f57a00bfaa6da900512c0697090dd55850c028ffae5da2005916
MY RECEIVE: 37d5ca061bc8d2746c9189494337b352c49b38e44edb003fc6bbd5f34ec5f23f
SD PAYMENT TX: 7d887c5e3ebb60c385b0b84ce7279ff3846bdd8d71181825175818b556c9fcf2
MY SEND: 8a155cfbb23b91c60c83bf54edd2b308567c7db1143a2c0ed4cf628747fc400f
MY RECEIVE: 672dfbb0d521c3d15f080d59e702e2af75bb0a05d3fd97f7544c1e06559d7e10
SD PAYMENT TX: 0f7f022b49bf817d7a5175d978b9b3e34509e63d1a722f169fb654bb8c7eebb3
"MY SEND" is the transaction ID of my bet placed to SatoshiDice.
"MY RECEIVE" is the transaction ID of the return payment I received from SatoshiDice (all of which are still unconfirmed).
"SD PAYMENT TX" is the transaction ID that SatoshiDice claims the payment should have had.
This is a total of 19.54851363 BTC.
I have completely re-downloaded the blockchain and rescanned, but the transactions remain unconfirmed and non-existent as far as blockchain.info and blockexplorer are concerned. However, the transaction IDs that Satoshidice claims they sent can be found on both sites, but the bitcoins are not in my wallet, and I do not see the transactions for them.