I found a "solution" for this bug. I was using moodle only with https.
The problem has disappeared since I use moodle with both http and https with LoginHTTPS option enabled. CATTEAU Olivier IUT "A" Paul Sabatier -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.3.4/299 - Release Date: 31/03/2006
