This issue isnt specific to the above servers or services however it has certainly happened on more than one SBS box to be so far.
You may experience authentication issues browsing http://companyweb on SBS 2003 and SBS 2008 servers after installing the cumulative security update for Internet Explorer (963027) or Internet Explorer 8.0.
The quick solution is to simply uninstall 963027, but to be honest, anyone that installs an Internet Explorer beta on a proddy server deserves all they get.





