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
public void postShutdown() {
        if (activityHelper != null) {
            activityHelper.shutdown();
            activityHelper = null;
        }
        if (idleHelper != null) {
        	idleHelper.shutdown();
        	idleHelper = null;
        }
        if (IDEWorkbenchPlugin.getPluginWorkspace() != null) {
            disconnectFromWorkspace();
        }
    }
    
    /* (non-Javadoc)
     * @see org.eclipse.ui.application.WorkbenchAdvisor#eventLoopException
     */
    public void eventLoopException(Throwable exception) {
        super.eventLoopException(exception);
        if (exceptionHandler != null) {
            exceptionHandler.handleException(exception);
        } else {
            if (getWorkbenchConfigurer() != null) {
                getWorkbenchConfigurer().emergencyClose();
            }
        }
    }
    /* (non-Javadoc)
     * @see org.eclipse.ui.application.WorkbenchAdvisor#createWorkbenchWindowAdvisor(org.eclipse.ui.application.IWorkbenchWindowConfigurer)
     */