MIT Kerberos for Windows 2.1.x cred cache breaks Win2k service

[Mike Frisch]

With the recent changes to the Kerberos Credentials Cache in MIT
Kerberos for Windows 2.1 and later, my service on Windows 2000 is now
broken.  Without being able to use impersonation, how do I allow a
Windows 2000 service to perform Kerberos/GSS operations on behalf of
other users?

Mike.