http://coin-base.info/kushcoin may have broke the same way the first 2 did. First unknown posted, and now 40 blocks without finding one.
I bet it's the share id's again. It's %4,000 worked. After the diff goes up it will lower the percentage worked, but the problem will still be there.
coinbase pool is working perfectly, have mined over 500K in the last 2++ hours. I logged in again now when you I saw you post and another 200K just appeared so those 40++ blocks must of paid out sitting as unconfirmed now