Ok this is from memory, but I'll try. Root-Private-Var-Stash-Themes. If this is wrong and no one corrects me I'll check when I get home tonight and repost.
I think the toggle just comes with sbsettings you can just go into the more settings and turn it off. Just go into Cydia check in programs look under the R and see if openssh is installed. If it is remove it
I tried iphone folders on my iphone 3g 3.1.2, recently broke with blackra1n and when I go in it only allows me to see certain files. No var/root or anything. Am I doing something wrong to access the files for themes and whatnot?: I installed the afc2add in cydia like the site said and still nothing.