Whether it's because so many people are trying to get these documents or because somebody is obstructing Internet access to them, it has been very hard to get on the WikiLeaks site and download them. Here are a couple of bittorent links that have worked for me.
Pirates Bay 1 cablegate.wikileaks.org_2010-11-28_220_total.zip
Pirates Bay 2 WikiLeaks 2010 Embassy Cable Leaks - Fast!
More later.