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.

9a5589048b... Block 149752 (2011-10-18 13:11:44) 7.123813 Received: Address 7.123813
377068d67e... Block 150103 (2011-10-21 07:16:48) 7.123813 Sent: Address 0