@david: 1. When it comes to downloading the SDK is there a way to get Safari to pick up a partial download from where it was last interrupted? To say the least it is a big file, something that I would normally use wget to get.

I downloaded the SDK myself 10 days ago using Safari, and can confirm that resuming the download (as described above by Scott) does indeed work. I had to do this because I had just rushed out to by a Mac mini, and needed to restart to install system updates, so stopped the download and then continued after reboot.

Hope that helps!