I have noticed many things have changed since the buy out and the forums being on their own as my support forums instead of being psych central.

one of those changes is ow to work the profile. with trial and error I discovered the way to change the about me is....

at top of page click on the word "profile"

on the page that it changes to click on the left side where it says "edit your details"

then scroll down until you see the box for writing your "about me" information.

write what you want in the box

then scroll down to the bottom and save changes.