Prefix Usage and issues

[Curt LeCaptain]

Yet another cropped up issue for me.

I've got this in my users file:

DEFAULT Prefix == "W", Auth-Type = "System"
        Service-Type == 0,
        Session-Timeout = 10,
        Fall-Through = No

It's used by a perl script to do authentication.  When the system attempts an authentication, I get a login failed for the username Wusername.

Example:
Mon Oct 17 11:07:43 2005 : Auth: Login incorrect: [Wusername/userpass] (from client webserver port 0)

Any thoughts on something I could be doing wrong with the prefix?

Thanks,
Curt LeCaptain