tedster - 4:27 pm on Apr 3, 2010 (gmt 0)
First, it takes a while to export new toolbar PageRank. Second, I don't think the different Google teams involved are coordinated with each other, and a PR Update doesn't impact anything but the toolbar.
No distractions, IMO - it was just time. I mean, how distracting is a new TBPR value, anyway?