hi,

running moodle in a freshly installed php5 environment throws a:

Strict Standards: Creating default object from empty value in /Users/swagner/Sites/moodle/config.php on line 5

If you complete it with: $CFG = new stdClass();
after:
unset($CFG);

$CFG = new stdClass();
$CFG->dbtype = 'mysql';

solved!