Error when accessing a workitem in jazz via Web UI

Hello,
Has anyone ever encountered the following error when accessing a WI in jazz via the Web UI?

Error!
The server is not responding or a page navigation occurred before an operation completed. Check that your server connection is working and that the server is operational, then try the action again or refresh the page.

I am able to access the WI from a thick client with no problems, yet this is the error I receive when trying to access the WI via the Web UI. I have tried it from IE, Firefox and Chrome...no luck

Any information would be greatly appreciated.

Thanks!
Sue