I know there's been problems with name-changing and invalid email addresses, but I'm pretty sure the loss of karma points, PM's and posts is a result of the namechange glitch. If the system required the correct email addy, it would't be letting you post as a plat member and stuff. I think you're either registered and able to post, or not registered and cannot post. The email confirmation is only pertinant with respect to being registered... it shouldn't be selective.