Does xdebug work with CodeIgnitor (after adding URI routing rules)?

Question

I had xdebug/Netbeans and CodeIgnitor 1.7.2 working.

After I added some new routes (in the "routes.php" config file), my app still works fine.

But now xdebug crashes in the CI_router class.

_set_routing() method is called. _parse_routes() is called. _set_request() is called _validate_request() is then called and produces a 404 message in the browser.

Is this a bug or is there a workaround?

Thanks!