User Blog Path wrong in admin

When I test a new blog it all works well for the setup except when I go into the dashboard for that blog and click in the upper left corner to "visit site" it takes me back to the wrong url. I have it setup so that the path for the blogs are blogname.ourdomain.com The path shown when I go in admin says /wordpress-mu/ in the Path box so it is directing them to blogname.ourdomain.com/wordpress-mu/
The correct path is given to them when they sign up, it's just an issue in the admin area.
Can anyone tell me where to go to change that so it doesn't have that as the default path for the new blogs? Other than having to manually go into every new blog admin and change it......
Thanks!