Home folder is not mapped to a client computer when multiple users are logged on to a computer that is running Windows Server 2008 R2

A new hotfix was released today regarding an issue when configuring folder redirection of the the home drive for multiple users on a DFS share in conjunction with Slow Configure slow-link mode being enabled. Apparently, the second user that logs on does not get the mapped drive

“…Consider the following scenario:

• You have a client computer that is running Windows 7 or Windows Server 2008 R2 in an Active Directory domain.
• You set up home folders for domain user accounts on a Distributed File System (DFS) share.
• You redirect the home folders to the DFS root by configuring the Folder Redirection Group Policy setting on the server.
  
  Note You can use the %HOMEDRIVE% variable to map to the DFS root.
• You use the slow-link mode for redirected folders. To do this, you enable the following Group Policy setting:
  Computer Configuration\Administrative Templates\Network\Offline Files\Configure slow-link mode
• A domain user logs on to the client computer, and then the home folder is mapped to the client computer.
• The mapped home folder is configured to use slow-link mode.
• A second domain user who shares the same DFS root with the previous domain user logs on to the same client computer.

In this scenario, folder redirection fails. More specifically, the home folder of the second user is not mapped to the client computer…”

Source: http://support.microsoft.com/kb/2715922/en-us?sd=rss&spid=14134