On your qdeclerativewebview tests all qml files include "org.webkit 1.0" this module does not exists in the Maemo 5 build. So the example have to use "QtWebkit 1.0". By the way i don't know how this test can run on my linux machine, where are the "org.webkit" module from ?
The test also tests for the width property. I don't know on which value it is set, but on the N900 the value is very different than expected in the test.