On the page you linked, check the box(es) to the left of the requesting person's name(s), and then click on 'Save changes' in the bottom right corner. That assumes that "Accept selected friend requests" is already selected (default).
Hey, I always got to retype name and login name twice before actually get access to this great forum. Don't know why. I often delete cookies etc with ccleaner.com.
Right now I'm loggedin, vBulletin still says I got to login... But, I'm unable to get access...
Herman, I think the problem is Internet Explorer 8. I've read lots of reports of login problems with that browser. My recommendation is that you use Firefox for visiting Mu-43. I'm guessing that would solve all your login problems. Another option would be to revert to IE7, but that's more difficult.