Your possible answers include:
1. Because … Apple engineers have never heard of the concept of a “patch”, and require you to re-download the *entire IDE*, with all libraries, all documentation, all binary code – everything – when they release an update? So the current “SDK” for iPhone (hint for Apple: when most people say “SDK” they don’t mean “plus a copy of a bloody operating system”, they just mean “the few custom bits that are specific to that app”) is a whopping 1.6Gb?
[NB: actually in general I think that’s a good thing – avoids a lot of mis-configuration / version mismatch problems – but as an MMO developer the idea of *not* patching gigabyte-sized packages horrifies me, and avoiding those problems actually isn’t THAT hard (it’s been solved many times by now!) these days. Writing (or buying) a good patcher is one of the first steps you do in MMO dev projects…]
2. Because … Apple didn’t think to split The Behemoth into multiple files, perhaps make them something reasonable, like a few hundred meg each?
3. Because … Apple decided to put this monster behind an authentication check on their website, presumably for legal reasons, and there is no other “official” mirror (all the ones you find on google are technically-illegal torrents or else, ultimately, redirect you back to the apple.com link), and their authenticated sessions TIMEOUT after 1 hour of “not fetching any new pages from the site” (completely ignoring whether you have any transfers in progress!), and refuse to send you data once your authenticated session runs out?
4. All the above?
NB: I wasn’t brave enough to try resuming the downoad without first re-authenticating and loading at least one web page from the apple developer site to prove I was logged in. I suspect (*suspect*) that the web browser would receive an HTTP 300 redirect to the login page, at which point most browsers are going to delete the partial download. Ha. Haha. HAHAHAHAHAHAHAHAHAHAHAAARRRRRRGHHH!.
Expect to see some comments/tutorials/advice on iPhone game development here at some point in the near future. If I can ever get the download to complete…