Empty block?

Again... UGH
sorry guys, don't know what is going on. Both blocks found today we're by me. And this is what I have in my settings.
blockmaxsize=970000
mintxfee=0.0001
minrelaytxfee=0.0001
maxconnections=100
gen=1
I don't understand why I mined one block with no fees and another with low fees.
My apologies.