abarre theme

And yet another issue. I'm using the Abarre theme. When I view my site all seems fine. Logo at top, nav bar on left, pages set up. However when I use my wifes comp and go to the site the page comes up as it should but it's missing the logo across the top. All there is is a box with a red x in it. Right click and click show pict, nothing. Thoughts? Sorry to be a pain but I have no idea.