Logout - user everybody must click twice

I need to click twice on logout in order to effectively log out, if I am logged in as admin.

STEPS:
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• log in as user 'admin', password 'admin'
• once you are in, click on Logout [x] in the upper right corner, and notice an animation on the Hippo in the upper left corner.
• from here, two options:
• - click on Logout [x] once more and you are taken back to the login page
• - wait a little while, and you are taken to the login page

In both options, you will be granted by a message saying "Session expired, please login again."

The same steps when taken with a different user (editor or author) don't exhibit none of the behaviors:

• - the Hippo logo does not animate
• - the login screen appears right after the first attempt to logout
• - there is no session expired message

In the catalina.out log file, there is these two lines:

29.03.2010 13:27:58 ERROR [org.apache.wicket.RequestCycle.detach():1126] there was an error cleaning up target org.apache.wicket.request.target.component.listener.BehaviorRequestTarget@1243575262[Page class = org.hippoecm.frontend.Home, id = 1, version = 0]>logout-link>interface org.apache.wicket.behavior.IBehaviorListener.IBehaviorListener (request paramaters: [RequestParameters componentPath=1:root:logout:logout-link pageMapName=null versionNumber=0 interfaceName=IBehaviorListener componentId=null behaviorId=0 urlDepth=-1 parameters=

onlyProcessIfPathActive=false]).
org.apache.wicket.RestartResponseException