Good call... I disabled the security on Norton Internet Security and the page loaded fine.
You can view the page at www.mobilerealestate.co.nz
I don't think I have ever had a problem with the page loading from the ISP only from my IIS (I am using IIS as I convert the page to ASP.NET for testing)
One of the images that will not load is the house for sale at $349,000. Yet the one for the property at $375,000 works fine.
It raises my next question. Norton Internet Security normally works all of the time. Why does it affect the page using IIS and not the Internet. I have reviewed the Security settings but can't find anything obvious?