krb5-auth-dialog is driving me nuts!!!

[Bernard Barton]

Okay, I've deleted all references to krb5-auth-dialog.desktop in
the following autostart directories:

/etc/xdg/autostart
~/.config/autostart

still, when I start xfce, I see a message about starting krb5-auth-dialog.
It's definitely trying to start it, because I removed krb5-auth-dialog, and
xfce hung during startup.  I did a locate, and can't find any more
autostart directories which might contain startup files.  Can anyone
tell me why xfce keeps trying to start krb5-auth-dialog?  Is it in an
init script maybe?

-Thanks