Sure about that? Because, bitcoin wallet generate new address. And in the deepbit page in payment section, when i click on the second transaction it shows the first one, and if i click on the time link it says "no such transaction".
I'm sure. I re-use bitcoin addresses all the time. Look how many people have bitcoin addresses in their signature - they don't change them everytime they receive a payment. I use the same bitcoin address for repeated payments from one pool, and another bitcoin address for repeated payments from another pool. One forum poster made several payments to me at an address I'd created for him, so I could easily see how many payments he'd made. Once you create a bitcoin address it's yours forever. Or until you delete or lose your wallet - always keep a backup!