Sweetim.com and ones from mozilla and yahoo won't delete even when I try to delete "all" cookies. When I use the delete cookies option all except sweetim.com seem to have been deleted, but they reappear after firefox restarts. How can I delete them, or at least the sweetim.com.? Sweet.im seems to have come in when I unknowingly downloaded sweetpacks hijacker. I looked in about:config and there is a lot of sweetim stuff, but no way to delete them. I have turned off allowing third party cookies, before I did that, a bunch of unwanted cookies reapeared when firefor restarted. This subject is on the internet, but the suppossed answer just directs to unhelpful websites..