In response to the recent wave of spammers registering on the forums, we have setup an host name and IP black list from which it is no longer possible to register. Also, due to almost all new member accounts with no posts being spam accounts (coming either from the new blacklisted hosts or having signature advertisments), we have decided to delete all member accounts with no post. From now on, every month all zero-post members that signed up at least 30 days ago will be deleted.
Since member and admin activation is unreliable (activation e-mails not being sent all the time and bots still getting through), we won't go with these measures, although we might eventually try to install another anti-spam, assuming we can find one that works on this hosting provider.
Sorry for the inconveniences this might cause.