XenApp 6 – Hotfix XA600W2K8R2X64003, 17, 26

Many people are implementing XenApp6 these days, and i highly recommend to keep getting updated informations from Citrix Support (http://support.citrix.com)

Please apply following hotfixes in your XenApp 6 environment:

XA600W2K8R2X64003
http://support.citrix.com/article/CTX126211

Servers running XenApp 6 can become unresponsive while shutting down. The issue occurs when when the picadm.sys driver encounters certain error conditions that prevent it from shutting down gracefully

XA600W2K8R2X64017
http://support.citrix.com/article/CTX126958
This fix addresses session reliability issues that can occur when using multiple, disparate client devices to reconnect to the same session.

XA600W2K8R2X64026
http://support.citrix.com/article/CTX127360
Attempts to log on to a XenApp 6 server using Version 7 or earlier of the clients can cause svchost.exe to exit unexpectedly. As a result, further connection attempts to the server fail until it is restarted.

( Issue with XenApp 6 hangs, people are seeing -> http://forums.citrix.com/thread.jspa?threadID=273399&start=45&tstart=0 )CTX127360 fix, this issue