I had the same problem on one machine(windows not SME) so I installed firefox and everythinig went fine after that, but most machines seem to use IE with no problems, even when trying to view the server-manger page on that same machine, it didn't make sense to me, I also know that there's something wrong with opera, when you fill info in, and click apply changes don't take place.
let me know if that solves it
cheers