I've earned 0.00071229 in 30 minutes.  On slush I get approx. 0.008 per block.  At this rate it will take approx. 5.5 hours to earn 0.008btc

However.  By entering the last 10 block durations at http://www.csgnetwork.com/timescalc.html it gives an average duration of 5 hours 24 minutes.

10 previous was average 5 hours 16 minutes.

So, no real difference there.  Might go looking at some other pools to compare.