This is very close…
… but still doesn’t answer the specific question of whether or not there is a “display” or “read” setting or some such to only display TITLES not CONTENTS of the post whenever a category is clicked on in the widget bar.
http://en.forums.wordpress.com/topic/a-page-as-a-list-of-posts-in-a-category-1?replies=2#post-103427
and take a look here to see what it could give you
http://www.share-warze.co.cc/
