I would check their IE settings.
All of the security and trust is leveraged from internet Explorer for
InfoPath.

Signature
Clay Fox / Microsoft InfoPath MVP
www.InfoPathDev.com / The InfoPath Authority / Downloads, Samples, How-To,
Experts, Forum
> Hi All,
> I have a published form running on WSS 2 site.
[quoted text clipped - 4 lines]
> Any thoughts?
> Thanks a lot in advance