Citrix has released hotfix XAE500R01W2K8066 for Windows 2008 32 and 64 bit operating systems.
New Fixes in This Release
When clicking the clock in the notification area of a XenApp 5 session on Windows Server 2008, the following error message appears:
"Unknown Time Zone…"
To enable this fix in its entirety, you must install both a client a server hotfix that contains fix #LA1044.
The fix works with time zone (UTC+09:00) Seoul and (UTC+09:00) Osaka, Sapporo, Tokyo.
XenApp servers behind read-only domain controllers (RODCs) might experience slow application launch issues while winlogon.exe spikes CPU usage.
You can download the 32 bit patch here.
You can download the 64 bit patch here.