I saw 2 transactions in my wallet and block explorer:

Status: 24004 confirmations
Date: 2/24/2014 15:43
To: UdvchVzTqc9yCiHz1vLLzKPEenXwaBPkbP
Debit: -33.631974 UTC
Transaction fee: -0.00001 UTC
Net amount: -33.631984 UTC
Transaction ID: f64c592cf54ff40594af262ceadccf61e6e0de7ac4af60eb6516078cb6cc77cb

http://bitgo.pw:3731/tx/571660ab99e64a775322a4cafe726965bf11e62c45b232c2d17cb77f301b45bb#i0

The transaction I found on block explore is not redeemed yet.  Any one know what happened? If somebody hacked my computer, why didn't he steal all my coins?