I am on ubuntu 7.10 using wordpress 2.7. I have installed PHP_Debug(wp pear debug) and WP-Control. I have a problem which Debug seems to tell me boils down to this:
/!\ PHP WARNING : fopen(http://www.mysite.com/wp-cron.php?check=alongmd5number) [function.fopen]: failed to open stream: HTTP request failed! /!\
Does anyone have any ideas how to debug this further?