Subsites Not displaying in a Multisite install

Forgive me for double posting this question – I believe i put it under the Multi-DB support forum which is not the proper place. Here is my and upon the recent upgrade to WordPress 3.3.1 I can no longer “see” these sites. They show in the “Sites” directory and I can access the “Edit” option from there, however, if I try to go to the dashboard of any of these sites I get an Internal Server Error and if I try to visit the sites, I just get a BlueHost page (my hosting service, obviously). What am I missing here? At this point I have deactivated every plugin and only activated the twentyeleven theme. Please, any help would be greatly appreciated!

Thanks,

Isis