Don't throw exceptions all over the place if no checkin service is

    {

        IContentProvider provider = acquireProvider(url);

        if (provider == null) {

        	// Fail quietly if this is a checkin request and there is no provider

        	if (url.getHost().equals("android.server.checkin")) {

        		return null;

        	} else {

        		throw new IllegalArgumentException("Unknown URL " + url);

        	}

        }

        try {

            return provider.insert(url, values);

        } catch (RemoteException e) {