The "User Id"-filed for adding extra users during the installation can only
show 8 characters. This means that if you enter a 8 character user name,
the cursor will scroll to the left, and the first character disappears.
This is in the text-mode installation.
In addition, those text boxes should limit the number of characters which can be
input to 8.
This is fixed in the latest cut of the installer (available in beta)