I uninstall and I am using the core sef joomla, I will install joomsef again and will send for you ok?
I would like ask you some things, can you answer me by this topic?

I am using firefox 3.0 in ubuntu.

The Tab configuration in sef administration doesn't work if the JCEditor is enabled, showing only "ARTIO joomSef Configuration global writeable".
if someone found this problem just change the editor, and maybe o core team of joomsef can see later..

I think that the file is administrator/components/com_sef/views/config/tmpl/default in code
<?php
jimport( 'joomla.html.editor' );
$editor =& JFactory::getEditor();
echo $editor->save( 'introtext' );
?>
submitform(pressbutton);

hugs