Bug 109702 [IDE] [Progress] startup workspace refresh blocks ui
the refresh action at startup of eclipse blocks the ui and cannot be moved into background. this is a similar problem as mentioned in bugzilla 82406 for the package explorer. only the refresh out of the navigator view has the possibility to switch to background.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchAdvisor.java
}
    /**
     * Declares an IDE-specific workbench image.
     * 
     * @param symbolicName the symbolic name of the image
     * @param path the path of the image file; this path is relative to the base
     * of the IDE plug-in
     * @param shared <code>true</code> if this is a shared image, and
     * <code>false</code> if this is not a shared image
     * @see IWorkbenchConfigurer#declareImage
     */
    private void declareWorkbenchImage(Bundle ideBundle, String symbolicName,
            String path, boolean shared) {
		URL url = Platform.find(ideBundle, new Path(path));
        ImageDescriptor desc = ImageDescriptor.createFromURL(url);
        getWorkbenchConfigurer().declareImage(symbolicName, desc, shared);
    }
    /* (non-Javadoc)
     * @see org.eclipse.ui.application.WorkbenchAdvisor#getMainPreferencePageId
     */
    public String getMainPreferencePageId() {
        
        return WORKBENCH_PREFERENCE_CATEGORY_ID;
    }
    
    /**