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.

3a1915d159... Block 149243 (2011-10-14 12:18:17) 124.58571 Received: Address 124.58571
b8725ef3a1... Block 149258 (2011-10-14 14:35:37) 124.58571 Sent: Address 0