Tips if you have problems downloading iPhone SDK
1. Go to http://developer.apple.com/iphone and login2. After logging in, the link is http://developer.apple.com/iphone/index.action
3. Replace http with https in the address bar so it reads https://developer.apple.com/iphone/index.action
4. Click the SDK link when the page is being served from the https server
via imerlion.com
That worked like a charm.
