Drew
Not really a reply but I thought I would try to keep this alive. I had several problems with moving to MySQL 5 in particular it did not seem to want to restore backups created with MySQL 4. In the end decided that I would be safer reverting to 4.1.16 which I had been using on my development box until more people moved to version 5 and the bugs I thought were in Moodle were resolved.
Steve