Thanks for explaining the stuffed options thing, Foolestroupe, something to watch out for, but I seem clear for the moment.

I'm puzzled by what is happening with your options though; when I click options a square box appears with a line of 7 icons at the top (main, tabs, content, feeds, privacy, security, advanced) clicking the last-named gives the set of tabs General, Network, Update, Encryption, that you are getting.

Being no techie I'm at a loss to explain how a step could go missing like that. Maybe a new download and clean re-install might fill in the missing bit? Or perhaps a visit to the users forum is in order?