I found an open issue on Drupal.org that seems to fit your problem. Here's the link.

Unsolicited advice: IMO, viewing the site on a wide screen laptop, this site SCREAMS for a maximum width. Try something like this:

#page {
  max-width:1024px;
  margin:0px auto;
}

Hope this helps,
Curt

Setting the z-index for the primary menu worked for me.

Also, I see what your saying about the max-width. I'll work with it a bit more and then throw my site up for the critique forum to see what else can be improved upon.

Thanks a ton