Community Edition 1.9.3.4 and SUPEE-9767 v2 (patch) are now available. The new release and updated patch address customer registration and other issues encountered by some merchants when using the original release. Please upgrade as soon as possible to keep your site secure. More information is available in the release notes at  http://devdocs.magento.com/guides/m1x/ce19-ee114/ce1.9_release-notes.html