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.

e7d1a064f4... Block 137426 (2011-07-22 02:35:45) 0.55 Received: Address 0.55
6f0e292156... Block 137441 (2011-07-22 05:18:39) 0.55 Sent: Address 0