Please understand that we do not host any of the these pages here (why?) except the links page and the project pages (of course). If you cannot load a page, please wait for some minutes and try again. If you still can't connect and you really need the page, try the Internet Archive; here's a guide.
If you can't connect to the Internet Archive, you have tough luck :(
I'll write a Python script to automatically check the links of this site soon, and will therefore know if a site (or page) is actually taken down and not just having problems the moment you wanted it. Nevertheless, you may contact me if you need to.