Does anyone have, the "lower reward" syndrome?

After every round i got much lesser reward than usual... I am beginning to panic!
These are usually around 0.0025, but now
18452 2013-06-07 10:39:27 0:14:40 2847270 229 0.00187782 240218 25.28180000 98 confirmations left
18451 2013-06-07 10:24:47 0:36:58 7112700 622 0.00193577 240216 25.46560009 96 confirmations left
18450 2013-06-07 09:47:49 1:31:11 17439636 1328 0.00158006 240210 25.31299996 90 confirmations left