Is there any reason why my hash rate should be lower with hirocoin than darkcoin? I'm using exactly the same miner with same settings but suchpool is showing 20% less hash rate than previous darkcoin pool.
It should be the same. Turn off the miner and switch back to Darkcoin to do a comparison again. If they are different please try the SuprNova pool and report back here.
giving the gpu miner a try right now so I can write up an article later today 
So far, only getting HW errors though, on both cards, and no accepted shares, even though i'm using the correct miner with the DarkCoin kernel....
So far, only getting HW errors though, on both cards, and no accepted shares, even though i'm using the correct miner with the DarkCoin kernel....
Can you post your configuration and type of card?