John,
I recommend you also post this question to WebEx Customer Support as they will be able to tell you if the problem has been identified before and if there is a fix ... or help by debugging. They are available 24/7 at support.webex.com.
We do encourage you to participate in the Cisco Collaboration Community and to also join our Cisco Collaboration User Group program! In the community, we encourage your discussion/sharing around collaboration topics and Cisco Collaboration Solutions, including business and IT requirements, industry trends, process, culture/organization issues, how collaboration can be used to transform businesses, vendor selection, adoption, training, architecture, licensing, and product features/functionality. If you are a customer or partner, you can also join the user group program to be eligible for member-only events and influence product direction.
Hope that helps,
Kelli Glass
Moderator for the Cisco Collaboration Community
