Forgot to ask, but does your personal "claim page" reflect any notation that your 50% has been paid back to you?
Nope, it does not. Suddenly I got an incoming 112,50 BTC transaction in my client. Haven't received an email about the 50% payment either.
I was just about to comment on the size of your 50% payout, until I realize you didn't mean 112kBTC.