Only using 3 add-ons and getting lots of crashing. But only after I dropped in the recent versions: Wyk. Framework/Quest Tracker, and then the Spamfilter add ons. Game is stable without, but inevitably crashing with them in. Varying from pulling your hair out frequently to every-so-often.
I have not yet tried running them without but the Spam filter yet, but it's late. Though I have tried running with just the spamfilter and was getting crashes.