It seems to be the CSS and Javascript more than anything else.A lot of websites these days really hate us Classic Mac users. >:'(
What is it about them that makes it hard to load on Macs? Is it the CSS? or too much multimedia?
Come to think of it, someone should try modifying the classic Mac OS version of Mozilla so that it can browse the modern web. Or better yet, create a new, fast web browser that can do that. Maybe throw in Gnash and the latest Java.