Is this a problem that a pool found 6 consecutive blocks? Check this out:



The pool will not make the 51% attack of course, for they are counting money on the system;
but it's still a problem right?
It would be a statistical anomaly if this did not happen from time to time.

With pools having over 20% or so, they're bound to find 6+ consecutive blocks every now and then.

It's not a problem. They can't really abuse or corrupt the system like this, especially since they can't plan for this sort of thing to happen on purpose. Even if they'd have 30%, it's still a rare phenomenon (like less than once in a thousand tries).