We run Exchange 2000 & IIS on a Win2K AD server behing a Symantec Velociraptor firewall. While most of our users can run OWA successfully, we have a few who are mysteriously unable to access their email via the web due to OWA hanging as it attempts to retrieve their mailboxes and folders from the Exchange server. They are able to successfully authenticate to our domain and accept an SSL certificate but their browser never gets past the cmd=contents screen. Any ideas as to what could cause this type of error would be greatly appreciated.