Hi. One or two things here. First, clear ALL your cookies/cache etc and see what happens then.
Second, try editing someone elses post. Being a mod you can do this, see if the same thing happens to you. (it shouldn't). If it does, I would get in touch with Rob and see if he can solve this.
It shouldn't happen really, could be you are not logged in or something silly like that. I don't know to be honest, no expert but at least something to start on for now.
