My girlfriend and I debate this rather frequently; she pronounces the 't' while I don't. We were both caught off guard once when she was using the phrase, "more often than not" and realized that when she said this specific phrase she said often with a silent 't'. We thought that was very interesting. In my previous searches for the answer to this question, i was really fond of the answer given by the chosen "best answer."
Geeze...Twilight fans did not fit in at Comic-Con. I went to Comic-Con being indifferent towards everything Twilight related...by day 4 I hated them all.
http://answers.yahoo.com/question/index?qid=20060706193650AAmjRiw
Thanks!