Note: While the last "balance" is the accurate number of bitcoins available to this address, it is likely not the balance available to this person. Every time a transaction is sent, some bitcoins are usually sent back to yourself at a new address (not included in the Bitcoin UI), which makes the balance of a single address misleading. See the wiki for more info on transactions.

0a7f0a57bb... Block 179621 (2012-05-10 22:56:19) 231.82 Received: Address 231.82
4eac970b1b... Block 183051 (2012-06-05 01:05:36) 231.82 Sent: Address 0