I attempted to follow through a link today that a CM posted to a post on the SO blog, https://blog.stackoverflow.com/2012/03/respect-the-community-your-own-and-others/, and it's showing me an error page. I've tried "retry for a live version" but that has the same effect. Going to the root doesn't help, it isn't just a problem with that link.
It's a very pretty error page, I'll give them that, but I suspect I shouldn't be seeing it. The rest of SE is working fine as far as I can tell.
Edit: As I was posting this, I guess, it did manage to load, but with this header present.
The plot thickens: It seems that I'm the only person actually experiencing this issue, but I am experiencing it both at home and at work. I'm in Redmond, so I wonder whether there's something geographical occurring, like a cache that's devoted only to my area, or even to the west coast? I've tried it on three computers now, one of which is never used for anything real so it shouldn't have any outside affect. And just for the record, at no point have I seen any problems with any other SE site.