ICEfaces portlets running in Web Space (v10) (which is basically Sun's version of Liferay running on Glassfish) do not work because state saving is not able to restore the view. When running with the default state manager:

        <state-manager>
                com.icesoft.faces.application.ViewRootStateManagerImpl
        </state-manager>

results in:

[#|2009-05-22T20:23:16.361+0000|INFO|sun-appserver2.1|javax.enterprise.system.stream.out|_ThreadID=21;_ThreadName=httpSSLWorkerThread-8080-2;|20:23:16,360 ERROR [ViewRootStateManagerImpl:74] Missing ViewRoot in restoreState, ice.session: OSG2uV1W4b-f9acKwYsUFg, viewNumber: 1
|#]


Switching to our other state manager:

       <state-manager>
           com.icesoft.faces.application.SingleCopyStateManagerImpl
       </state-manager>

results in:

[#|2009-05-22T20:30:25.262+0000|INFO|sun-appserver2.1|javax.enterprise.system.stream.out|_ThreadID=27;_ThreadName=httpSSLWorkerThread-8080-4;|20:30:25,262 ERROR [SingleCopyStateManagerImpl:145] Session Available, but View State does not exist for viewId:/chat.iface
|#]

Since ICEfaces portlets run fine on other Liferay bundles, there must be something specific to state saving on this particular platform that is causing the problem.