We've deployed our Java web app on a customers site that we've deployed hundreds of times without any problems, but this one customer is experiencing weird issues regarding security zones in IE.
Basically they're using a FQDN instead of just the server name, in conjunction with SSL (which I think is irrelevant). They access our web app from a bunch of static HTML pages within the same domain (using the same FQDN) but when our web app first loads up in IE it's being shown as a Internet site, not Intranet. Clicking refresh in IE seems to refresh the zone and it switches to the Intranet zone (or Trusted, I can't remember which).
What could be causing this issue? It doesn't behave like this on all machines, or for all users, but it does appear to be a little random.
Any help or pointers would be greatly appreciated. They're running Server 2008, XP and IE 8.
Paul.