We have 2 DFS servers on one AD site. One was Windows 2008 and the other Windows 2003 R2. We upgraded the 2008 (C:) to 2008 R2 but left the (D:) data drive intact.
Ever since, folder redirection for Desktops and Desktop Wallpaper and the users home folder (H:) don't always apply. Logon sometimes takes up to 6 min. After this 6 minutes, Event Viewer shows 502 warnings and 510 errors relating to the folder redirection Group policy not being applied - until next logon.
Network speed is generally good. dfsdiag and dnsdiag don't show anything obvious.. we've disabled any scripts that could slow logon.
Any help would be greatly appreciated..