Hashnest : dont you see like a problem here 
:
2014-09-15 20:30:24 -0.0010816 Mining Maintenance Fee: AntminerS1
2014-09-15 20:30:24 +0.0005909 Mining Earnings: AntminerS1
the fees are simply higher than earnings ! : 2014-09-15 20:30:24 -0.0010816 Mining Maintenance Fee: AntminerS1
2014-09-15 20:30:24 +0.0005909 Mining Earnings: AntminerS1
that's a shame ..