Yep, that admin component is very important for mosCE.
It's also come to light that mosCE 1.0.3 final has been experiencing some rendering issues in the new FireFox 1.5, likely stemming from its use of an older version of TinyMCE (Moxiecode released a 2.0.1 stable recently)...
The developer's aware of the issues: should probably see a stability fix relatively soon:
forum.joomla.org/index.php/topic,21945.0.html