phpBB Component in Joomla - Registration issue

[Etherfast]

Hello there.

I have a slight issue with the registration system.
I'm running Joomla 1.0.10 and the latest version of phpBB integration component (/com_forum).
They're both running smooth, but when I'm trying to register an username, after I fill in the profile page and click Submit, no page loads, only an empty page (after a minute).

If I refresh the forum index page, it tells me the last registered user is user_i_just_registered, but because of that blank page I'm getting many messages from the users requesting help.

Any suggestions over this, please?
Should you need aditional information, just ask.

Thank you in advance.