Hi
I understand what You mean, but it's simply not happening when I'm looking at it. I'm clearing cache of browser, so there is no images from slide than I load the site and I see a man with umbrella, than man in front of squared wall, than with baloons... There is no white screen except the start of the page when preloader is visible. I'm really sorry, but I do not know how to help if I'm not able to see the problem.
Please try to contact me on skype so we share screen and I'll see how it looks like on Your computer.