Bluehost is no longer a good host for Drupal, especially for multisites.
I just found out that Bluehost has limited the amount of mySQL tables per account to 1,000 tables. With Drupal that means that's a main site and 4 multisites and that's it. When I signed up a year and half ago, the limit was 3,000 tables.
So much for hosting Drupal at Bluehost. I'm looking into a Managed VPS host now.
Susan