We run a Windows 2003 domain, and the vast majority of our users use
Winterms and run Citrix think client sessions off a farm of Server
2003 / Citrix Presentation Server 4. Have an odd problem where
thumbnails of photographs are no longer showing in most sessions -
although sometimes if you log on and off a couple of times, the issue
is resolved. I am not sure it is a problem specific to servers in the
farm either as I have heard reports of some users (on the same server)
not being able to see thumbnails, while at least one could.

Has anyone seen this problem before, and have any ideas on how to
resolve it? Our media team are going nuts!

Thanks,

Chris