Superpages?

hi,

I'm interested in trying superpages and I have some questions about it:

- In what state is the current work? (enabled by default?)
- Are superpages available for i386 (I remember that in the early days
they were AMD64-only)
- What kinds of loads would they help the most? I'm specifically 
interested in web servers so lots of IPC between apache, php and database.