On a slightly different topic than ver1.30.

Is it the new epoch, or am I the only one that has noticed a big decline on the shares/earnings?  With my (2) rigs I used to make 0.05/day. Than the rule changed so that it would only payout after a minimum 0.1.  So, that was ok, every two days I would get paid out.  But now it seems that it's every 3 or 4 days.  Sometimes 5.  While the mhs stays the same, is it that it's simply getting harder to mine eth?
I'm currently mining with ethermine.org

Just wondering (and learning).