vaadin on oracle 11g r2

Hi,

Using Eclipse, i deploy the tutorial contact application (http://vaadin.com/tutorial) and it works fine.

Then i create a new server profile for Oracle Weblogic Server 11gR1 patchset 1 and deploy the same app there, it doesn’t work. Every time i access the page there is a big red ‘Session Expired’ box popping up. I configured web.xml with a session timeout but that doesn’t make a difference. Has anyone else encountered this ?

Since Oracle Weblogic is our corporate platform, i would be grateful if people could share their experience in general with Vaadin on this application server.

Thanks !
Jorg