I needed to implement a cross based login for joomla and vbulletin last May, which is when I found eLearning Force's Duo-Syc bridge to achieve this. When I first installed it for my client, everything appeared to be working fine (after I made a couple custom hacks). However, after my client tested it for a while, he found a bug that I couldn't hack around. So I wrote support for advice, and they advised I upgrade to their new version.

The new version is complete in all aspects of what I had wished the bridge would do when I first bought it (but instead had to hack some workarounds - but now there's NO hacking needed - its an easy install and you're go). Definitely this product has evolved a long way from a strong beta last May, to a fully featured and operational component as of August, 2007. And the support was very helpful, with a 24 hour turn around each day that I wrote them this past week.

To reiterate my point, the new features that help control logins between joomla and vbulletin work flawlessly now, and this even includes the lost password feature. If a user forgets their password, they can request a new one from joomla interface, and the new password is automatically updated for the vbulletin forum.

The bottom line is that it solved my problem seamlessly. When a user logs in to the site (via joomla), they are automatically logged into vBulletin (as I specified to do in the bridge's configuration - lots of options there). Well done!