Wordpress: List recent posts by category and ONLY that category

[acornrevolution]

This problem is seriously hampering the way I have set-up navigating my site.  I have been using the code below for some time, successfully, but have had to avoid adding more than one category to a post because if I do, posts from all categories listed are shown in the Recent Posts section - a dynamic portion of the sidebar.php which displays the recent posts for whatever category is being browsed. I only want that categories posts to show, and no others.  Is there any way to modify this so it shows the current category's recent posts and ONLY those posts?

 

Here's the code:

http://wordpress.pastebin.com/x9uwXGmr

 

Thanks!  Much appreciated!