GHash generated 7 of 12 blocks since 0:00 UTC today. It means 58%.
I guess they better start double spending then!! I mean, this would be the time. Right? Right.
The attack is about having >50% of the hashrate, not necessarily the generated blocks. Block generation is completely random. It's very possible for 1 person to generate 100 blocks in a minute. Very improbable, but completely possible. It's the hashrate that's important.