That's a killer hash rate you're pulling.  If I could pull that high, I'd be VERY tempted to just mine solo with a machine.

If anyone has had issues with new workers on the pool not connecting, you might go to the pool, delete the workerid and then re-add it.  I had that occur and it fixed the issue so I'm guessing there was a hiccup that caused new workers to not get added correctly on the pool.