Please go to your preferences page and make sure your "See Mature Topics" setting is set. Setting it to "Yes" means you see the Mature Topics forum (contains political and religious debates). Setting it to "No" means you do not see those threads.
What do you mean? Are you trying to view your entire contact list, including offline contacts? Or are you trying to set the window to-fit your contacts list? Maybe a little bit more info and I could help you out , by the way, which version of Trillian are you running? I'm running the Astra version.