Big problem: RedHat user expired by itself !

[michaelsanford]

I just logged into my RedHat machine over XDMCP (with XDarwin ) but once I logged out, I tried to log back in immediately and was told that my account has expired (and please see my sysadmin).

I disabled root logging in from the Login Screen, and of course over XDMCP, so now what do I do?

Is there a file I can edit from the shell (I can log in as root over SSH, thank God) that will un-expire my account?

EDIT:
I fixed the situation. It seems that my "change-password-within-this-amount-of-time" setting was corrupted, so when I logged in it though my password was always expired. I fixed it with « usermod » from the shell.