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.
[From XAE500R01W2K8066][#LA1044]
XenApp servers behind read-only domain controllers (RODCs) might experience slow application launch issues while winlogon.exe spikes CPU usage.
[From XAE500R01W2K8066][#LA1617]
You can download the 32 bit patch here.
You can download the 64 bit patch here.