I'm having a huge problem with my blog.
After writing a new entry, attempting to either publish or save the entry results in a 404 page not found error.
I've gone in to my directory via ftp and checked, and the post.php file IS there, and in the wp-admin directory -- iow, it's not missing. I ran automatic upgrade AFTER this issue began, but it's still happening. No other changes have been made to my blog installation in months.
Can anyone help?