@Dribbles - Depending on the size of avatars allowed, post count required, number of users, the load will vary - Usually signature images are 100x400 at most, so imagine about 7 avatars per user (including their avatar) and then you will see how this can affect server load on a big board
@LangTuDaTinh - Thanks for that - That may correct lots of people's problems
@Gemini - You will have to add the references to signature into member.php
Satan