I can't believe it;
http://web.archive.org/ is blocked - I discovered this when wanting to read an obituary on a peace activist.
web.archive.org is a complete recorded history of the internet - so rather then block pages or make a code change to the proxy they just block the whole site?
This is like locking up the door to a library as you don't agree with handful of books rather then make the effort to restrict access to the said books.
What a shame that is.