Up to 180PH/s at times.  Just can't seem to drive it any higher than that no matter how much we rent.

Also the 4.92 showing now is for the current round payout of the top spot.

The top spot payout for that last round ended at 6.13588996 plus the transaction fees for the top miner.
That was a long round and took a lot of rented hash to get it done before the year ended, so not profitable until the luck comes back around.