odoo_source/addons/base_setup/base_setup_demo.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data noupdate="1">
        <!-- TODO:  Remove comment after fixing bug #527050-->
<!--        <record id="base.user_demo" model="res.users">-->
<!--            <field name="action_id" ref="action_base_setup"/>-->
<!--        </record>-->
        
    </data>
</openerp>