(non-)Antialiasing problems with ImageTTFText()

[StrikerNL]

I would like to use ImageTTFText to put text on an image with a .ttf file, but the font is not being displayed properly.

This is my code:
[code]<?php

header("Content-type: image/png");

$im = imagecreatetruecolor(400, 60);

$white = imagecolorallocate($im, 255, 255, 255);
$black = imagecolorallocate($im, 1, 0, 0);
imagefilledrectangle($im, 0, 0, 399, 59, $white);

$font = 'lib/fonts/verdana.ttf';

imagettftext($im, 10, 0, 10, 20, -$black, $font, 'This is non antialiased, looks messed up');
imagettftext($im, 10, 0, 10, 40, $black, $font, 'This is antialiased, I don\'t want this');

imagepng($im);
imagedestroy($im);

?>[/code]

This is the output:
http://ddcrew.be/test.php

To explain what I want:
http://ddcrew.be/problem.png

I've already recompiled freetype with bytecode interpreter enabled, then GD and PHP, no effect.

Does anyone have any ideas?