It almost sounds like an ISP or firewall problem and not the browser software. It could also be spam/virus software that is blocking the site, but I run 3 spyware and 1 anti-virus/spyware programs on my computer all the time and I'm seeing all of his posts and pictures.
FWIW - ExplodingColon is posting pics and we are not pulling your leg about it! Now, maybe, the pics don't stay up on the server forever (free storage, you get what you pay for!) but they are there for a few days after he posts.