_**Another Update: Thanks to SeaMonkey76 in the MSDN forums pointing out that this issue is fixed in the October 2011 SharePoint CU (http://support.microsoft.com/kb/2596582), so get patching 🙂**_ Update: A couple of readers have pointed out that this behaviour is is the norm where there isn’t a root site and it’s best practice to implement one. I totally agree and have run into situations where things like InfoPath have ceased to work due to this.