Is this an expected error when you click logout?  I'm using the
wicket-shiro stuff from /trunk a while back.  (i'm not sure how to
figure out what version the jar is built from.. I don't see anything
in the META-INF folder)

WARN  - DefaultSecurityManager     - Delegate RememberMeManager
instance of type [org.apache.shiro.web.WebRememberMeManager] threw an
exception during getRememberedPrincipals().
java.lang.NullPointerException
        at 
org.apache.shiro.web.attr.CookieAttribute.getCookie(CookieAttribute.java:262)
        at 
org.apache.shiro.web.attr.CookieAttribute.removeValue(CookieAttribute.java:357)
        at 
org.apache.shiro.web.WebRememberMeManager.forgetIdentity(WebRememberMeManager.java:320)
        at 
org.apache.shiro.web.WebRememberMeManager.forgetIdentity(WebRememberMeManager.java:316)
        at 
org.apache.shiro.mgt.AbstractRememberMeManager.onRememberedPrincipalFailure(AbstractRememberMeManager.java:547)
        at 
org.apache.shiro.mgt.AbstractRememberMeManager.getRememberedPrincipals(AbstractRememberMeManager.java:488)
        at 
org.apache.shiro.mgt.DefaultSecurityManager.getRememberedIdentity(DefaultSecurityManager.java:610)
        at 
org.apache.shiro.mgt.DefaultSecurityManager.resolvePrincipals(DefaultSecurityManager.java:486)
        at 
org.apache.shiro.mgt.DefaultSecurityManager.createSubject(DefaultSecurityManager.java:363)
        at 
org.apache.shiro.mgt.DefaultSecurityManager.createSubject(DefaultSecurityManager.java:197)
        at 
org.apache.shiro.mgt.DefaultSecurityManager.login(DefaultSecurityManager.java:315)
        at 
org.apache.shiro.subject.DelegatingSubject.login(DelegatingSubject.java:249)
        at 
voyager.security.wicket.component.LoginPanel.login(LoginPanel.java:189)
        at 
voyager.security.wicket.component.LoginPanel$2.onSubmit(LoginPanel.java:83)
        at 
org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1538)
        at org.apache.wicket.markup.html.form.Form.process(Form.java:934)
        at 
org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:896)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)

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