I installed JetPack on one of my blogs without issue. Worked just fine.
I then felt okay installing it on my main blog. Install and connection were without issue. The problem? The stats page is showing the old WP Stats page, not the new JetPack page. In addition, it's just showing top referrers, links in, etc, and not the graph. It's the old page, minus the graph. I figured it was a possible cache issue. I cleared cache. I restarted my browser. I logged in and out. I tried via a secondary browser. I uninstalled and reinstalled and reconnected. All showing the old stats page with JetPack properly installed.
I thought, for a second, that this new plugin wouldn't allow multiple uses of one WordPress.com account for multiple blogs. So I tried installing JetPack on my third blog to see if that was the issue. Install went by without a hitch, showing the new stats page and debunking that theory.
I have no idea why I have the old stats page on 1 out of 3 installs. Any advice? (Have deactivated, un and reinstalled twice now. No go.)