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.

b0c1cb8474... Block 173469 (2012-03-29 22:00:17) 8.39 Received: Address 8.39
5bf2f76a79... Block 173473 (2012-03-29 22:48:50) 8.39 Sent: Address 0