Since the first moment I looked to questions on EL&U this morning, I noticed something was wrong. This is a screenshot for a random question on the main site.
As you see, the page doesn't show the badges in the top part; there are just the counters for the badges. The page doesn't show the voting arrows, the widget to add a question as favourite, and the Super drop-down menu (a.k.a. "the Collider").
I have this issue just on EL&U, and only on the main site. I don't have the same issue on the meta site, or other Stack Exchange site. This is what I see in this very site.
I am using Safari 6.0 running on a Mac with OS X 10.8. I don't think that makes any difference, as the problem is just for EL&U, and its main site. I would think the problem is with the CDN, but I would expect to hit the same CDN when I visit any of the Stack Exchange sites. I thought to the server cache, but also in this case I imagine the problem would be visible in all the Stack Exchange sites.