I've been looking into this actually. They work if you view a PM and if you don't have a name associated with a quote. It's not just us, it's every forumotion board. It's a problem with their overall code that they're working on but they don't have a real reason why it's screwed up so................either take the names out of your quotes, remove the quote brackets, or ignore it?
Not a happy answer, I know, but at least they're looking into it.