There was a problem with emails on this server, that should now be solved.
If you tried to register on the forum and did not receive the confirmation email, please try again.
There should be an option to resend the registration email.
I've just come to register and the activation mail doesn't work cose when you click on the activation link, the ";" in the url become "%3b"
result in google after click --> "http://forum.mx-bikes.com/index.php?action=activate%3bu=786%3bcode=0940aec922"
replace the "%3b" by ";" and that work!!!
If that can help you!