Are there any issues in paying out the balances?
Last txn was on 26/03 for the week 2013-03-17 - dont seem to have been paid out since
Nope. Looks like you earned less than one full bitcoin on the week of the 24th, so your account was not flagged for automatic payout this Monday. Send me a PM if you'd like me to process a manual payout for you today. Otherwise, you should be above the 1 BTC threshold for next Monday.