I think I just found another issue. Seems big to me, maybe not others...
I have my client set to NOT pay transaction fees.
I sent 167.98375486 i0c to the exchange very shortly after receiving them into my wallet (maybe 20 confirmations), but it looks like the client rounded it off to 5 decimal places and took the remaining and tacked it on as a txn fee. or for all of the conspiracy theorists, maybe it is rounding and sending the remainder to another address a la Office Space. In bitcoin, when you send a transaction too early (not enough confirms) it prompts you that it needs a transaction fee. I was never prompted. I know losing .00000486 i0c is nothing, but if everyone is losing them times thousands of transactions, it starts to smell like some bullshit.
Status: 3865 confirmations
Date: 8/16/2011 23:29
Transaction fee: -0.00000486
Net amount: -167.98375486
Since the exchange is down, I can't login to see if I was credited the full amount or the rounded amount, but I bet it is the rounded amount... I only have 1 transaction in my client that includes i0cents, so I can't really check to see if other transactions were similar.
Check your clients to see if you have similar circumstances.