extension.meta is not compliant

extensions tag has only "id" witch is not compliant with sf2 and it results a Symphony Fatal Error. [The extension.meta.xml file for the firebug_profiler extension is not valid XML:
Missing default namespace definition]
It seams that "status" and "xmlns" attributes is resolving the conflict.
I hope this is the issue here and I'm not just overlooking...

Also extension.driver.php needs to become more Symphony
$this->_Parent->Configuration to Symphony::Configuration() and eventually on install() $this->_Parent->saveConfig() to Symphony::Configuration()->write();
Please consult if I'm in the right path, it still seams to working with some Symphony's compliant modifications but not respond very well.
I'll be more specific if reply....