posting the OS would be very helpful
but from this "gnote 0.7.3-4.fc14 " i am guessing you have fedora 14 32 bit installed
i take it you did not read the fedora docs on making a new user or changing a user name
you can not JUST change the name of the folder in /home
things will not work .
change BACK the users home folder name to what it was
then make a new user with the name you want
and read the fedora docs
and read the man page for "useradd"