Comments are all of a sudden broken on my site. I don’t remember changing anything for weeks, so this seems to have just started "randomly" (I know that doesn't really happen). Anyway, I'm using WordPress 2.0.1 with K2. I turned off AJAX commenting, and it returns a blank wp-comment-post.php file as a download. So that didn't help.
Anyone have any ideas? Here is a link to an example post:
Also, the "dashboard" and "plugins" page are not coming up past the navigation.