OSX Xcode fails to download additional iOS Simulators from preferences->download

Question

I am an inexperienced iOS developer, have just bought a macbook and installed xcode 4.6 I went to Xcode->preferences->downloads->components to download additional simulators I see 4 choices: 1) command line tools 2) iOS 5.0 Simulator (around 600 MB) 3) iOS 5.1 Simulator (around 600 MB) 4) iOS 6.0 Simulator (around 600 MB)

I press Install for iOS 5.0 Simulator and it shows me a progress bar. however, the progress bar moves very slowly (around 20% of completion in 3 hours) and then it breaks after some 4 hours since download start with a message "network connection was lost".

I have a fast connection of more than 20 Mbit/sec and can download files of the size of 600MB in no time. I thought this could be some kind of a problem with my particular ISP so I tried repeating this from 4 distinct different places with different ISPs (the speed was always like 20 Mbit or more).

the result was the same - it downloads roughly 20-25% in 3 hours and breaks. This is real slow for a 20 Mbit connection on a 600 file.

so its not ISP I dont expect this to be a problem with my particular Mac either because it downloads other files from other websites with a normal expected speed of my internet connection.

Does anybody have an idea what the problem might be? some setting in Xcode like "limit download speed to 3600 baud" ?

Extra Info:

OSX Version: 10.8 Xcode version: 4.6 Mac type: MacBook Air

Thanks in advance

Answer 1

I tried 3 more times and was able to finally download all three packages. a total of 1.5GB took 3 hours to complete. So, this is some unresolved problem, because such download speeds are really uncommon for my 20+ Mbit connections.

Anyway, the problem with "can not install" is resolved. the problem with download speed remains.

Thanks to all the commenters for ideas and support.