Snapshot Missing from Admin Menu

In an attempt to debug a menu issue with WPMU Dashboard plugin and WP 3.5 on another site, I noticed that Snapshot is missing from my admin menu on this site running 3.4.2. Wondering if these issues are related, but to stay focused on this issue, wondering what is going on. If I disable and re-enable the Snapshot plugin, it reappears in the admin menu, but why did it disappear in the first place? There definitely seems to be some CSS funkiness going on here…

WP 3.4.2, Mingle Child theme, lots of plugins…

Thanks,

Dave