2 fplanque Mar 13, 2013 21:15

Hi,
Thanks for the reply. What folders should I replace if I don't want to loose my config?
Thanks ;)
Please see this page: http://b2evolution.net/man/installation-upgrade/faq-install-upgrade/will-i-lose-my-data
You are in the same situation as an upgrade.
This looks like either your website has been hacked or you have a faulty plugin/widget.
Try disabling all third party plugins and widgets. If that doesn't help, you should re-upload all files in order to overwrite a potential hack. (it would be even better to check for non desired files on the server first).