Shutdown, No Login/Logout Window

[Jim]

FC8, X86_64, i386 boxes
I have  problems Log Out > End Session, takes me straight to the 'shell' 
, no login/logout Window.

At the 'Shell' prompt, login as user and 'startx' , it bypasses user 
login window and goes right back to Desktop of last user.
I have got two x86_64 and one i386 FC 8 boxes that is doing this.
Please Help !!!!
All three boxes have been fully updated, no more updates avail.