I was recently setting up a VirtueMart eCommerce store for a customer. VirtueMart has its own login module that you use, but what I was finding was that there were links to the Joomla! login pages that could be accessed on the site. When you got to one of the Joomla! login pages, the registration link was pointing to the Joomla! registration page, not the VirtueMart registration page.
