I'm trying to figure out if this is an old Instawallet( or Paymium) address

15KUecgaW2x4tDwRWfpnMJxq4RRJ5Z7fQN

I sent 3.2btc into it like a dumbass a few days ago copying the first wallet that came up in my client when I clicked the "addresses" tab instead of the "receive" tab. Turns out it was an address I sent coins in and out of back in 2011. Now I'm trying to figure it out to get them back.

I am in touch with Boussac who is looking into it. Someone has access to the wallet since the coins have been swept into another wallet. A very active wallet at that. You guys have a take on what it could be?

You can look here for more info https://bitcointalk.org/index.php?topic=448918.0, but I'm not sure being in the Beginner's category would yield someone capable of doing a deep analysis of the blockchain.

Of course there's a nice bounty for successful recovery. Thank you