DirectoryNotFound when impersonating

From: Roger Wolfson (rogerw7979@yahoo.com)
Date: 09/08/02 

From: "Roger Wolfson" <rogerw7979@yahoo.com>
Date: Sat, 7 Sep 2002 18:38:38 -0700

My aspx page has a link "Delete", which deletes a directory of temp files
from a server.

I wanted to do this in a separate thread, and have used Impersonate() to set
the principal of that thread to be a user who is an admin on the fileserver
I'm deleting from.

System.Security.Principal.WindowsIdentity.GetCurrent() , in that thread,
shows that I am who I want to be.

However, all directory commands to a different machine result in a
DirectoryNotFoundException.

(This is in C#, by the way)

System.IO.Directory.Exists("\\\\myDebuggingMachine\\c$") works fine (==true)
but
System.IO.Directory.Exists("\\\\myOtherServer\\c$") becomes false as soon as
I impersonate. Even after I impersonate,
System.Security.Principal.WindowsIdentity.GetCurrent().IsAuthenticated ==
true. (using NTLM)

Am I hitting a difference between process-level and thread-levels tokens?
Whatever my problem is, it seems to be similar to what someone else asked
here:

http://www.dotnet247.com/247reference/msgs/21/109048.aspx

Thanks for any suggetsions anyone can offer.

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