Multiple prompts for username and password

We have a web portal for documents which prompts for a username and password
when accessing the documents.
We have recently upgraded from Win2k SP4 to WinXP SP2, both with IE6, and
since the upgrade the users are getting prompted for a password a second time.
If you hit OK, Cancel or press Esc, the document will open.
I have tested the site using Netscape and the second prompt does not come up
so it does not appear to be the server asking for a second time.
Is there a change in the way security credentials are handled in IE from
Win2k to WinXP?
Any suggestions would be appreciated.

Please ignore this one. I've posted it in the wrong location.

I have re posted in the IE6 group.

"Barry Jung" wrote:

> We have a web portal for documents which prompts for a username and password
> when accessing the documents.
> We have recently upgraded from Win2k SP4 to WinXP SP2, both with IE6, and
> since the upgrade the users are getting prompted for a password a second time.
> If you hit OK, Cancel or press Esc, the document will open.
> I have tested the site using Netscape and the second prompt does not come up
> so it does not appear to be the server asking for a second time.
> Is there a change in the way security credentials are handled in IE from
> Win2k to WinXP?
> Any suggestions would be appreciated.