Debug with Komodo

Hi
I have set up debugging as described in the videos with Komodo and X-debug.

For some reason my debug session always stops at the first line in index.php
define('DRUPAL_ROOT', getcwd());
like I made a break point (which i did not)
When I click on the continue debug it don't stop at any breakpoints at all...?

Any suggestions to what is wrong with my installation?
I am using Komodo 7.0.2
Firefox 13.01
MAMP Pro 2.0.5

Thanks in advance

Niels