If you are looking for a true SSO solution from Drupal (6.x) to Moodle (1.9.5 or higher), go there:

http://drupal.org/node/297349#comment-1260881

Comments

Chris Johnson’s picture

Chris Johnson commented

Moodle Single Signon (SSO)

I am also now the maintainer of the moodlesso module. Let's try to gather together all the possible SSO schemes and code as issues for that module, and leave the moodle module for other Drupal / Moodle integration ideas.

Chris Johnson’s picture

Chris Johnson commented
Status: Active » Closed (fixed)