just checked, all 5 pools working,
seems like some big miners are making a quick batload of coins and than waiting for diff to drop down again or something like that
i hope soon it won't be possible when we get more constant miners
I have a doubt which I'm sure someone will clarify me.
Why don't coins choose to retarget the diff at every block to prevent this type of assaults by big hashers? As far as I can see it, this type of thing only hurts a coin since during the time the blockchain has bigger difficulty, the persons which keep the coin alive are the low(er) hashrate guys, while when the the diff decreases, the big guys come in and it is like a desert for the small guys.
I personally don't see any disadvantage to this method other then to remove an unfair advantage to very big rigs since if you have a big rig you will always have the opportunity to have higher payouts (which is fair since money was invested in those rigs)
BatCoin is not so bad in this matter, because diff retarget occurs every 40 blocks, which is about 1 hour. Take a LiteCoin for example, where diff retarget occurs once per 2,5 (or 3,5 - I don't remember exactly) days. Look at RonPaulCoin, where diff retarget was supposed to be per one day, but at the moment when hashcows started mining it for few hours, then siff exploded up to 78 and it took 1-2 weeks to change it. Now in RonPaulCoin the devs change diff retarget so max diff change is +-12%. I don't know if BatCoin has similar mechanism (Batman, can you answer?) but even without it BatCoin seems to be stable, because even if there will be massive diff explode and much hash power dissapaer then it shouldn't hurt BatCoin as much (Batman, am I right?)