Thanks.If they host their site on https, and their content on http, or remotely, and it's not the same domain, maybe that could give issues. I am curious to see what error the browser has for those broken images.
Can you test with Chrome as well perhaps, if you have it installed.
I am curious though. My Canadian friend can for example not access certain sites due to them being on an IP range of Amazon web services. The site loads, but images on their cdn do not. And certain certs dont load for some reason because of this, crippling https sites that have 1 item on aws. Other aws stuff works, but when it doesn't work and we check the IPs of the resources- they are aws. We haven't been able to figure out why this is. We had a list of bout 23 things to try, failure on all. grrr. So i understand this frustration.Thanks for the tips Floris. I'll investigate further.