Hi im create three users after i boot the image i enter username and passwd to login in propmt not in gui.. 
 output :
 users@hostname: /mnt/sda1/......./: cp 123 /mn
 t /sda1/some dir 
 while im typing in prompt like above automatically coming down. if i want edit something in typed content means i cannt do it 
while editing ..
  users@hostname: /mnt/sda1/......./: cp 123 /mn
 t /sda1/some dir -
users@hostname: /mnt/sda1/......./: cp 123 /mn           -  - -  - -
 t /sda1/some dir 
cursor is ending as i showed i cannt delete r edit wat may be the problem.
same problem i get in gui terminal after i enter login created username ..............