It should now be OK to send message as Henrik has removed successfully the old CAPTCHA, but has not yet been able to install successfully an updated one. So in the meantime he is having to deal with a large number of crap emails (over 100 in the first night!)
So should be able to use the contact links now. Hopefully a new version (preferably the usually invisible one) will be installed soon. Please return to this thread if you still experience difficulties.
David