Trouble with include/require

Hi list, i'm trying to include files in my php scripts but things seem not to work properly. In my script, i include a file like this: <?php include 'includes/db.inc' ?> I have all include files in includes directory, that's a children of the directory where my scrips are. The include_path config. variable is set like this: include_path = ".:/php/includes" (i have uncommented that line) PHP does not include my files. What i am doing wrong? Thanks AL