As for the captcha I am using scrambled captcha I mean the configuration is set as scrambled.
I'm not very familiar with the adduser plugin, but as far as I can see, it uses the spamblock mechanism provided by the spamblock plugin and/or moderation, which does not really help you. Meaning there ...

Do you actually mean “registrations” as in “register as a user in your blog”? (You would need an external plugin for that, serendipity_event_adduser.) Or do you mean spam comments?

Yes I meant registration as a user
Thanks
Adam

However I am getting spam registrations
Do you actually mean “registrations” as in “register as a user in your blog”? (You would need an external plugin for that, serendipity_event_adduser.) Or do you mean spam comments?

they are somehow bypassing the captcha which is ridiculous to say the least ...

Hello there, I am currently using version 2.0.3
However I am getting spam registrations they are somehow bypassing the captcha which is ridiculous to say the least, I can't bypass it, but these bots seem to easily by pass it, okay they maybe require activation etc.. but the database gets filled with ...