We use Exchange 2000 conferencing server to assist users from anywhere via
the Internet to share their desktop and work with them interactively. The
latest Active X patch KB912812 has broken all connections via IE to the
conferencing server. If we uninstall the patch from end-users desktops
everything starts to work again. The compatibility patch did not help.
Strange that a MS patch broke an MS product but I guess someone missed this
one during the pre-release testing.