John Hunter wrote at 2004-9-10 14:17 -0500:
... On Windows computers running IE, however, when a user clicks on one of the documents, the basic authentication dialog appears even though they have been authenticated already with cookie crumbler.
Check your "Z2.log" ("ZServer" log file). I made the experience with MS Windows 2000 that authentication information was not passed from webfolder to IE. The "Z2.log" demonstrates this easily: IE comes as anonymous user. Apparently, this is not your problem, because when you are using IE you are likely not to use webfolder. In this case, look at your "error_log" object (after you reconfigured it not to ignore "Unauthorized" exceptions). It will give you some hint why Zope returned an "Unauthorized" response.
-- Dieter