That's because there was discussion on your name change - and there still is. It's unlikely to go through. Thing is, there's already a prominent person with a nickname "Shadow" on this board (ShadowGPW), and wether you use '.:Shadow:.' or not, you're essentially renaming yourself to a nick that is already in use. Wether that's going to be allowed or not, it's recommendable that you do not change your nickname to the same nickname as active/popular community figures (same as when say, you'd rename yourself to '.:R3ptile:.', '*Dethman*', '.:CraccoBoy:.' or '-=Cooba=-' or something like that) since that will just breed confusion. It seems the board crew is tending towards disallowing name changes like that.

In my personal non-admin opinion, it's silly to do, too. If there's already someone with the name you want, surely you can come up with another one (you actually already have a different name). It's just not respectful towards a person to copy their name. It's also disrespectful to ask if someone else can be renamed to another account name just because you want that account name.