I am doing some authentication against the Active Directory, but am (for some users only

) getting the following error:
Provider (0x80040E37)
Table does not exist.
More specifically:
- The page is accessed internally (company-wide)
- All employees are logged in to the same domain (but from different locations).
- The error is generated for some employees only, but I can't pinpoint any difference between those employees and others for which the page works.
- Anonymous access is disabled in IIS
- This is running under a W2K server using IIS 5.0
Any idea why it is working for some users but not for others?
Thanks,
Ziad
Here is the relevant part of the code: