I didn't get paid either.
It seems like for half a day there was a flat line with my shares - neither the balance nor the unexchanged have moved up during the second half of the day.
I had some hardware issues yesterday nad i have been tweaking the config a lot but i did not stop submithing shares.
This is my chart.
http://www.middlecoin.com/reports/168ujb1Jmkqtty61vxXTgcka5v3WvigHW4.html