Background Images Not Appearing

Earlier in the day I downloaded Ed Merritt’s “Ocean Mist 1.1” theme and installed it. The problem I’m having is this:

None of the background and sidebar images appear in Firefox, although they do in IE. When I check other blogs that use the same theme (using FF), the images are there. I’ve gone over the style.css of a number of these sites and compared them to mine, but I can find no discrepancies.

Any ideas?

https://www.allabreve.org/insomniac