Hi guys,
I had some server troubles yesterday (it was under fairly heavy load) so there were some problems: sometimes when the miner would try to get work, it couldn't - that's why the speed would drop to zero, it was waiting to get work. Even worse, sometimes when it tried to submit work, it couldn't - however the client side was still thinking that it did, so it increased the number of payouts. This is why for several of you, there may be a discrepancy between the number of payouts shown in the coin generation page vs your account page.
Thankfully this was fixed yesterday evening, so it should all be fine now.
I'm sorry about that.