If, after upgrading to VirtueMart 2.0.22c, your registration page looks quite messy, like image below
(http://virtuemart.fr/media/kunena/attachments/67/ha5d3320.png)
edit this file :
your_site_folder/components/com_virtuemart/views/user/tmpl/edit_adress_userfields.php
and change in section // Output: Userfields (around line 27) the last
$openTable = false;
in
$openTable = true;
if needed, see more explanations here
http://www.webtimarket.com/en/help-for-virtuemart/156-small-issue-registration-page-display-in-virtuemart-2-0-22c-correction.html
Perfect! It works fine!