After installing PSE450W2K3X64R02 & PSE450W2K3R02 on our Presentation Server 4.5 farm we noticed when users would launch their published applications their logons would pause at “Running Logon Scripts” for about 8-10 seconds.   A fix from CTX104893  resolved my issue, using method 1.  Which was, add the following registry key for 32-bit: HKEY_LOCAL_MACHINE\Software\Citrix\Logon Value Name: DisableStatus [...]