CAPTCHA acting weird

[TiNUZ]

Hi all,

I've got a very weird problem with CACPTHA,
on some computers, the image will show when opening http://www.micropix.nl/gallery/captcha.php,
on some computers, I only get a red cross, like the image doesn't exists.
Both IE7 and IE8 doesn't work, Chrome does !

a friend of my tried with IE7 without issues 

All the required php modules are installed.

[TiNUZ]

nevermind, found a reCAPTCHA plugin