What you pasted says "Nick is protected" and that you need to identify to use it. Obviously, you're not identifying. If you've never identified before, then someone else registered the nick and now you can't use it. It is not really hanging. If you change your nick to something else (something that isn't registered to someone else), you can get right in without a problem. Or, if you identify to that nick if it's your registered nick, then you can also get right in. If all you did was type /nick sd23dsy42 when it stops there, then you'd get right in (I doubt anyone registered or uses that nick).
