To begin upgrade to the 173 version. In 171 there is a lot of bugs and vulnerabilities.
As long as the security code using the captcha plugin Scaptcha. In the 175 version will do the verification code such as plug-in contacts.
If not more difficult, add a ticket to the bug tracker, not to forget.
Forever unshaven, red-eyed, detached from reality, with his cockroaches in my head. And let it always will be!
