moodle in molinux zero

[jorgemp]

Hi
I'm installing a server with xampp 1.7 in molinux zero. It seams to work fine, but when I start Moodle (1.8.11), I receive error codes indicating there is no conection with the database. When I check it, the messages are this:
user root in phpmyadmin without a password, user root in mysql without a password
I ckecked security and refreshed the passwords, so the server runs ok again, but when I go back to Moodle, starts to work and suddenly receive the warning "mysql server has gone away" and all stops again.
This happens every minute.
Could you please help me to get out of this?
Thanks a lot for your help

Jorge