after testing it works fine with 4.0.3 the only thing is to make facebook connect work you need to go to the header template look for this code:
Code:
li class="welcomelink">{vb:rawphrase welcome_x_link_y, {vb:raw bbuserinfo.username}, {vb:link member, {vb:raw bbuserinfo}}}</li>
and add this below it:
Code:
<vb:if condition="$vboptions['enablefacebookconnect']">
{vb:raw facebook_header}
</vb:if>