Help with transaction still showing unconfirmed

Hey guys, I sent someone 0.45 BTC last night around 10pm from my bitcoin-qt 0.8.6 wallet. It's still showing zero confirmations on Blockchain and in my wallet. Here are the tx details:

https://blockchain.info/tx/88d196b543799274d38b9e33def17a8c8ea4b3fba3ae2860785d51dbea62094f

Code:

Status: 0/unconfirmed
Date: 3/13/14 22:08
To: 1CaYkQJXvb4Lx3PE365nRm18Xnd2PubCmw
Debit: -0.45 BTC
Transaction fee: -0.0000001 BTC
Net amount: -0.4500001 BTC
Transaction ID: 88d196b543799274d38b9e33def17a8c8ea4b3fba3ae2860785d51dbea62094f

What is going on with this transaction? The funds definitely have been withdrawn from my balance in my wallet. Will this clear itself up or will I need to do anything manually to remove/cancel/restore something??