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.

17837a5b3d... Block 174895 (2012-04-09 04:52:31) 4316.12052336 Received: Address 4316.12052336
50a6154425... Block 174896 (2012-04-09 05:01:29) 4316.12052336 Sent: Address 0