It's not any specific page, it's the whole site other than the homepage (and maybe the forums). It's happened to me on two occasions and later got better. It says something that it lost connection to the server as I recall.
@Ferret: It's the whole site for me (except the homepage and possibly [I didn't check] the forums). I think it said that it lost connection to the server. This has happened to me twice and twice it has gone back to normal.
On top of that posts are disappearing (not spam, your posts even) and I'll hard refresh and they may or may not be back. In fact this may or may not be a double post because my last post didn't show up even after several hard refreshes.