My wallet is not showing the right balance. I made this deposit

Status: 9150 confirmations
Date: 6/29/2014 14:47
From: unknown
To: WfYR9LMgZdsJeTYcLfTEGJVW3U3kBPQqRs (own address)
Credit: 2824.0211394 WEST
Net amount: +2824.0211394 WEST
Transaction ID: d6eb0a94c6551700c96482e372e1b3ac1b78aa9ef56a26fbb66fdc814c5966a1

But my wallet currently only shows 2609 coins. The explore shows 2830. What's going on with my wallet why is it not showing the correct amount of coins?

http://cryptexplorer.com/address/WfYR9LMgZdsJeTYcLfTEGJVW3U3kBPQqRs