I search for similar problems to mine, but don't see anything...

I'm trying to install zenphoto on Ubuntu 8.04. I've install php5-gd and apache2, but seems no matter what I do, when I go to zp-core/setup.php my web browser just keeps popping up new windows so fast that I can't close them before my PC is overwhelmed.

I've tried FF and IE, but both do the same...any clues on why this happens...I've completely remove the zenphoto folder and started fresh several times, but the same thing happens each time...and not a single error

Thanks in advance