We are currently running on a Windows Server 2008 R2 domain with Vista Enterprise SP2 workstations. We have a login script that runs from the netlogon share on the domain controllers, however this script doesn't always run. Most days, most users it runs just fine, but on occasion a user will log in and the script doesn't run, however logging off and logging back in resolves the issue. It is not always recreateable as the workaround almost always works. UAC and the firewall are turned off and disabled. Any ideas would be helpful, this is not a new issue, but would like to see something resolved. We were hopeful upgrading our 2000 server domain to 2008 R2 native mode would resolve the issue but it hasn't.