to change your username, you must:
1) make sure what the username you want to change to is allowed in this community
2) contact a administrator (for example, jaysl)
3) through pm, tell the admin what you want to change to
4) if the username is allowed, it will be changed in a matter of seconds (minutes at most)
ok that sounds like a app that my brother would like
it would be a. excessive network collisions or d. slow connectivity between devices those would be my answer.