subcategories display too far right in IE7

I am working on a site using the WP-Magazine template, and am having a problem with the page second level subcategories navigation dropdown in IE. The top menu with the page names that are second level subcatagores are supposed to drop down 8px to the right of the left edge and 20px below the top edge of the the first level subcategory when hovered over. This works correctly in Firefox, but in IE, they appear at the correct height, but 20px from the right edge of the first level menu item – basically the width of the menu item too far to the right.

An example is at hbama.com/wordpress under the Benefits and Join page links on the top right of the page. The css is in stype.css

Not sure if this is specific to the theme or is a problem with basic Top Navigation CSS.

I can provide CSS and example