I have been using "styx" for quite a while (was my handle in my gaming clan)
abt two years ago that changed to "naib" and as a result this is the only place I still log in as "styx", so when I do a cookie clean I loose my login name and autologin
SO I am requesting a handle change (only an Admin can do this though)
As suggested, only the administrator can do that for you - you need to PM him and ask (it may take a while!). As for your cookies 'problem', don't clean them out! - 'problem' solved! 8)