cUrl working unpredictable (connect failed)

[R4]

Hi,

I'm working with cUrl and I'm getting strange results. When I run the
following script, most of the time I get the error "connect() failed" but
sometimes it works and returns the requested page???

<?php
$myCurl = curl_init("www. whatever.com");
if(!$myCurl)
echo curl_error($myC url);
else
{
$result = curl_exec($myCu rl);
if(!$result) echo curl_error($myC url);
curl_close($myC url);
}
?>

I'am working with PHP 4.0.6 and libcurl 7.9.3.