Actually there is a more recent issue that involves deleting a single key that was installed by one of the recent Security updates.
The key is this:
HKLM\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{4B106874-DD36-11D0-8B44-00A024DD9EFF}]
"Compatibility Flags"=dword:00000400
The problem has been discussed in this thread:
http://forums.techguy.org/showthread.php?s=&threadid=96394&perpage=15&pagenumber=4
The key is this:
HKLM\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{4B106874-DD36-11D0-8B44-00A024DD9EFF}]
"Compatibility Flags"=dword:00000400
The problem has been discussed in this thread:
http://forums.techguy.org/showthread.php?s=&threadid=96394&perpage=15&pagenumber=4