Hello,
I have encountered the following display bug in your demo as well as trying on my server when viewing with firefox. Tried with firefox v10 & 11 both gives the same problem. In another case, viewing with IE is working well.
I like to let you know that even on other newer/older templates are also showing me the same result. At times when I am lucky by waiting 5-10 minutes some template may successful load the picture.
Tried with 2 machines, Macbook OSX with Firefox & Windows 7 with Firefox both return same result. I really dont think this is firefox or my computers issue.
It always work well with IE
View In Firefox
View In Internet Explorer