WP Super Cache network activation problem

Hi all, i recently have activated WP super cache, i have followed some advices and tips in wpmu fields and also other forums to optimize wp super cache to my network needs.

I have Network Activated WP Super cache and the problem im having now is when a user publish's a post or add's a page the cache gets clean from all network, and i don't want it to clean all other network blog's caches.

Also i have read in wordpress forum, wp super cache can't do this task while network activated.

My question is do i need to activate wp super cache per blog basis, or wp super cache don't work like i want it to work?

Thank you