CURL suddenly returning * for one page?

[Anidazen]

I was working on a script using complicated parsing on some external websites.

One of the scripts suddenly started returning nothing but an asterix! Any idea why this is?

Curl code being used is as follows. URL is definitely still correct.

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
ob_start();
curl_exec($ch);
curl_close($ch);
$content = ob_get_contents();
ob_end_clean();

[Anidazen]

Any ideas?

Possibly they banned me, but I only hit the site like 19 times total while working on parsing...