In CentOS 5.10, if I have, say, an X terminal window up on my screen, the next time I log in, it's there when I log in as an unprivileged user.
That's because I can save the layout the way I want to; there's a checkbox for it to save the layout upon exiting.
I see none for CentOS 6.5. So, my X-terminal isn't there when I log in each time.