FC10, Could not start Kstartupconfig

[Jim]

FC10/KDE
Had to reinstall box with KDE and when partitioning I left the 
/home/users directories alone.
after installation i had to put the users back in with passwords (no 
change in username and password)
Out of five users when trying to log back into two users I get this 
error message , "Could not start Kstartupconfig"
, and I can't get into their home directories.

What is wrong here. ?