Well, it looks like you have a couple of interesting issues.
They're very odd and random issues - I'm guessing this is a new installation? I don't know which version you're running, but I think it's possible that some of the files were messed up in transit somehow. Maybe a server burp while uploading or something?
I'd FTP into your server, and compare the filesize of wp-admin/edit-form.php, wp-admin/admin-functions.php...etc. See what the filesize is on your server, and then compare that to the filesize of the file on your hard drive. If they're not the same filesize, then I would delete the ones on your server and re-upload the ones from your hard drive - making sure that they don't get corrupted (if they do, I'd download a brand spankin' new set of files and use them).
See if that helps out.