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
* @see org.eclipse.ui.application.WorkbenchAdvisor#preStartup()
     */
    public void preStartup() {
        
        Platform.getJobManager().suspend();
        
        IProgressService service = PlatformUI.getWorkbench()
                .getProgressService();
        ImageDescriptor newImage = IDEInternalWorkbenchImages
                .getImageDescriptor(IDEInternalWorkbenchImages.IMG_ETOOL_BUILD_EXEC);
        service.registerIconForFamily(newImage,
                ResourcesPlugin.FAMILY_MANUAL_BUILD);
        service.registerIconForFamily(newImage,
                ResourcesPlugin.FAMILY_AUTO_BUILD);
    }
    
    /* (non-Javadoc)
     * @see org.eclipse.ui.application.WorkbenchAdvisor#postStartup()
     */
    public void postStartup() {
        try {
            refreshFromLocal();
            checkUpdates();
        } finally {
            Platform.getJobManager().resume();
        }
    }
    /* (non-Javadoc)
     * @see org.eclipse.ui.application.WorkbenchAdvisor#postShutdown
     */