xenapp 5.0

Complete firmware upgrade for every component of the server. BIOS, HDS, NICs, Etc. HP Server DL380 G4

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=15351&prodSeriesId=397634&prodNameId=3288132&swEnvOID=4022&swLang=8&mode=2&taskId=135&swItem=MTX-e3cc3c652e1046dc88f2ceecb8

Then:

http://support.citrix.com/product/xa/v5.0_2008/

http://support.microsoft.com/kb/949914 - Citrix ICA clients may crash when they are connecting to a Windows Server 2008-based terminal server that has Citrix Presentation Server installed

http://support.microsoft.com/kb/951149/en-us - Stop error on a Windows Server 2008-based terminal server when the server is running under a heavy load: 0×0000000A

http://support.microsoft.com/kb/955625 - Mandatory user profiles do not work as expected on Windows Vista-based and Windows Server 2008-based client computers when the %LogonServer% environment variable is set in the profile path

http://support.microsoft.com/kb/953531 - A 0×0000007E Stop error occurs in Windows Server 2008 after you unmount and delete a persistent VSS snapshot

http://support.microsoft.com/kb/958652 - Some Citrix commands do not work correctly in Citrix XenApp 5.0 for Windows Server 20083