It may, but I think this was a one time goof at Alta. It was put back as soon as it was switched. About half our sites show that 6-8 rotation. It is hard to tell what the referrals are saying for those two hours -- there is so much caching going on these days you don't know whether you're looking at a referral for those two hours or a delayed view out of someones isp cache.
I was expecting an update a week ago today (last friday). They've been doing the updates mostly on friday.