Thing to do ..each time I updated the wordpress.

go to wp-admin/index.php

comment out these line.

//var update2 = new Ajax.Updater( 'devnews', 'index-extra.php?jax=devnews' );
//var update3 = new Ajax.Updater( 'planetnews', 'index-extra.php?jax=planetnews' );

deactivate all those plugin.. and re-activate back.

test one by one.. to see which one had broken.

sometime the uploader thing also break..