<A target="_blank" href="http://www.bleedyellow.com/blogs/erik/entry/8_5_1_fail_your_code_may_just_break19?lang=en_us">Erik Brooks is not happy. His site recently moved to 8.5.1, which is great, but..</A>. It seems there are a lot of old apps, going back to Domino 4.something, that have stopped working. He's posted some of the "suspect" code.