I found out that WP Super Cache doesn't work for individual blog. The settings somehow stick to the whole site. I tried on 2 different sites:
- apmart.com, and
- binh.name
When I update the settings on binh.name, the WP Super Cache on apmart.com also changes exactly the same as binh.name, and vice versa.
What can be noted: both sites use the same wpmu installation, but DIFFERENT database.
Seem like WP Super Cache use some file to save the settings instead of WP DB?
Could there be a solution? Thanks in advance.