Looks like the "0% luck for a day" has finally come to a close at 27+ hours. That was BRUTAL!!!!
I don't think it's luck. There's a pretty consistent pattern there where we have bad luck for that block if the pool hashrate is (10 + n*0.23-n)PH/s, where n is any positive integer. The block at 10.23PH/s was 20.5 hours, and the one at 10.45PH/s was over a full day. Lord knows what would happen if we actually hit 10.67PH/s, it could be a couple day long block.
I hope slush looks into this and can find the error in his code. These long blocks need to stop.
I get the feeling people took your comment seriously

I know MrTeal's been around on the block for a while. I trusted it was "tongue-in-cheek". Doesn't change the fact that I'm a sucker for talking about formulas and numbers

But I honestly am quite curious about the recent jump in pool hashrate. 10% in roughly a day? That's a pretty good jump for Slush, which has been bouncing between 9.5 and 10.5 PH for weeks now. Yet according to blockchain's distribution chart, Slush has dropped to only 2% of the network hashrate. Just looking at those two numbers, you would think total net hashrate (and difficulty) were shooting up again, but we appear to be due for another semi-marginal difficulty increase. Just my observations.