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.

ff2b287b00... Block 168986 (2012-02-29 02:35:33) 4.9425 Received: Address 4.9425
e078e041ff... Block 169156 (2012-03-01 03:05:57) 4.9425 Sent: Address 0