Cannot login to new blogs

Hello,

I got a weird problem I cannot figure out. I have installed Wordpress MU 2.8.6 and Buddypress 1.1.3. Now I have no problem logging into my main site but I cannot log into new blogs that have been created.

No matter how I arrive at the login screen for the blog, I enter my user name and password but nothing happens. No error message. The page just goes back to the WP login.

I even changed the password of the new blog to the password of my main blog through my main admin area so I know the password is correct but absolutely nothing happens.

Any ideas about how to correct this? I can't even tell if this is a WP MU or Buddypress problem.

Thanks,

Ed Brancheau