I searched all threads in the forum for this one and saw some discussion of it, but no one seemed to have a good answer... here's what I'm trying to do: I have multiple Wordpress installations on a dedicated server, with each one using the same database and sharing the same user table (I changed wp-config.php in each installation to make this work). Each Wordpress installation is a separate product within aMember. I am using the aMember-Wordpress plugin combined with the "Members Only" plugin (http://wordpress.org/extend/plugins/members-only/) to protect the installations. I am not using folder protection - just those 2 plugins - because I *need* users to be logged into Wordpress so they can post comments and questions without having to repeatedly enter their name/email address. It works for the first installation - when someone logs in, Wordpress correctly detects it and they are logged into the site and can comment fine. However, the user is not logged into the other installations successfully. I have followed this tutorial: http://engine.taffel.se/2008/11/18/multiblog-single-login-in-wp-26/ But when I make sure all those keys are the same in both wp-config.php files, everything stops working and the user cannot log in at all, in any installation. I'm using WP 2.7.1 and aMember 3.1.4 - anyone have suggestions on how to make this work? Thanks!