[SOLVED] Why is Cron job triggering an Ajax response?

[MarkE]

I've used Lazy Cron successfully elsewhere, combined with a Cron job to trigger it. However on my current project it is not working. The reason seems to be that it is not giving a normal response type. The Cron job is 

wget --quiet no-cache -O - https://domainname... 

It runs each time with an error-free response, but does not trigger Lazy Cron. If I paste the url https://domainname...  into the browser it does trigger LazyCron. With a bit of debugging, the reason is clear - the Cron job gives  responseTypeAjax = 2 which is bypassed by Lazy Cron, but the browser gives responseTypeNormal = 1 which is processed by Lazy Cron. Any ideas why and how to fix it (other than hacking LazyCron.module)? The triggered page is just a simple template with a response of "echo 'Hello from ' . $page->title;"

EDIT: Please ignore this - I think I have mis-diagnosed the problem - will sleep on it!!

EDIT2: Nothing wrong with LazyCron. Problem was not assigning permissions to the cron job -i.e. the triggered function did not operate properly with "guest" role.