In response to "Rafael Domiciano" <rafael.domiciano at gmail.com>:
> 
> Frequently Slony is vacuuming my database, and I'm having to kill his
> proccess because it's slowing the client-side application.
> I tryied to find option that disables the vacuum but i'm unsucessful.
> Someone know how to stop vacuum's Slony?

This should be enough information for you to address any issues:
http://cbbrowne.com/info/maintenance.html

-- 
Bill Moran
Collaborative Fusion Inc.
http://people.collaborativefusion.com/~wmoran/

wmoran at collaborativefusion.com
Phone: 412-422-3463x4023