[SimplePie] Get empty feed result

[thipages2]

Hi,

Using the following script

//URL1
test('feed://www.tuaw.com/rss.xml');
//URL2
test('http://blog.rguha.net/?feed=rss2');

public function test($url) {
        $feed = new SimplePie();
        $feed->set_feed_url($url);
        $feed->init();
        echo $feed->get_title();
}

the test with URL1 works fine but not the test with URL2.
I have tested also the URL2 with the simplepie.org demo page and it works fine 
!!!

There should be a mistake somewhere ...
Any ideas?

Thanks, tit