Here is a link to SFO's port website. http://www.sfgov.org/site/port_page.asp?id=55713
The Carnival Paradise was scheduled there on 12/12/08 last port Long Beach and next port Long Beach. It's not listed as Dry Dock like the Star Princess is. I bet it's headed to Long Beach for dry dock.
Here is the Calendar for Long Beach. It also shows Carnival Paradise there on 12/12/08. That's strange how can a cruise ship be in two places at once?