Think i found a small bugg with the earning rate.
This is before i updated my browser at 473 according too the counter but if you check too the left it should have more then half which is more then 600.
http://i.imgur.com/sEPClM3.pnga few seconds later after i updated my browser (forgot to take a ps of the clock but you could probably remake it)
http://i.imgur.com/Tz7fdHZ.png