Topic: Can not disable Captcha

i changed by site address and captcha suddenly stopped displaying the captcha image, i changed back to my old address and it still doesnt show so i tried to disable captcha and it will not let you disable it.
out of frustration i decided to install a fresh copy to test it out (version 2.0.3) and you can not disable captcha from there neither regardless if you try to turn it on or off in settings. seems nobody can register on my test site. just wondering if i am the only one with this issue?