No withdrawal until morning !!! Fantastic! A speed is 100/100. We can all get some sleep!

What is this, please ?
http://prntscr.com/6i39pq

I have requested the withdrawal of the 124,000th that moment I received payment and I could follow in coinbase. That's fine and I thank ... but ... After the withdrawal, the rate of collection Satoshi halved, and is now 600satoshi / 10min. As long so? When will I receive again in 1200/10 min instead of 600/10min?