From Gustav Delius (gwd2 at york.ac.uk) Wednesday, 27 April 2005, 04:29 AM:
This is because Martin put a require_login() onto login/change_password.php which in turn redirects to login/change_password, leading to the infinite loop.
Because it looks like Martin has put some thought into this already I will let him fix this.
From Don Hinkelman (hinkel at sgu.ac.jp) Wednesday, 27 April 2005, 12:53 PM:
I had same problem with 1.5alpha. Downloaded April 26.
Infinite looping when a user logs in after admin manually enrolls that user and requires new password.
From Martin Dougiamas (martin at moodle.com) Wednesday, 27 April 2005, 09:51 PM:
Fixed in CVS.
It was the result of a security fix that was made too secure.