WordPress MU

I have version 1.2.5 of wpmu and it works like a charm. Problem is, out of the blue my themes won't update when I try to upload.

When I go to http://seshn.com/wp-admin/wpmu-themes.php
and try to activate a theme a pop up shows this:

"You have chosen to open

wpmu-edit.php
which is a : PHP file
from: http://website.com

What should Firefox do with this file?

Open with ----
Save to disk"

Anybody out there know what the hell is going on???

Thanks!

Yes.

http://mu.wordpress.org/forums/topic.php?id=5975&page&replies=10#post-42067

By the way, please don't multi post on the same subject. Most online forums frown on stuff like that as it takes the time away from folks who are trying to help out.