[balinor]

Please don't post questions in the bugs forum, it is for bugs and bug fixes only. Moving to Template Editing.

4.2 is css based, meaning all of the width values and everything else are in the stylesheet, main.css. Any posts on 4.1 won't help you as this is a completely different layout. Find the class that controls the side menu, and then go into your stylesheet and edit it. This looks like it:

#left-bar {
float: left;
position: relative;
width: 150px;
margin-left: 7px;
}