my mu is not working with groups

Hi,
I activated the multiple networks options and installed buddypress.
But whenever I click on something like "Groups" or anything, basically, it doesn't go to that section, and reloads the main page.
My website still seems to be blogging to the main page, could it be that it is because it is not going to mywebsite.com/blog ? I remember reading somewhere that it should.
Thanks ahead of time for any help.