Thanks ura soul, but you could have chosen a nicer picture. Shocking! 

I will give it a try with reordering my plugins. I'm also looking forward to supajax and fully understand that you won't make unnecessary extra work to yourself. I just hope that I can upgrade to 1.9 without having too many plugins not running....

i would look to ensure that advanced_comments is after any other comment based plugin in the list (such as galli comments and comment_tracker).

re: cats ->better to know true reality, than live a lie. 'nice' is its own form of denial based illness.

Yep, is almost last plugin, but I still have double posts. It most likely has problems with some other plugin. 

Is there a conflict on the global $CONFIG?

I'd use Elgg's web services API to expose a method for adding a user rather than directly including the engine.

I don't know how to check if exist conflict on the global $CONFIG

How to use Elgg's web service API to adding a user ? any example ?

coreg plugin :)