This release is for Drupal 5.x
It is fairly stable, I use it on one of my sites. Please test it and report back if you find any bugs or problems.
UPDATE as of 2007.11.08:
Major update on how protection works. Protected_node now utilises the Node Protection System.
Protected_node now stores passwords as sha1 hashes with optional salt. Salt could be configured in settings.php by definig $protected_node_salt variable with a random value. More entropy means better security. Usage is recommended.
New release for changed features and additional bugfixes. May cause problems, but also may fix some. I hope for this to be generally usable and appreciate testers and people who can provide feedback in the issue queue.
The 1.x branch of Pathauto is the feature complete upgrade of the 4.7 to Drupal5.x
The major point of this 2.x branch of Pathauto is to get rid of old cruft and start implementing the token.module to provide the patterns.