το συνδεσα με ενα wi fi που βρηκε ελευθερο και δουλευουν ολα κανονικα
http://discussions.apple.com/thread.jspa?threadID=1623310
I have observed this problem for at least two years and have investigated it extensively. I have determined:
* All of the following characteristics have been observed from MacOS 10.3 running on a G4, up to the latest OS and hardware. (I suspect the problem is even older)
* The problem happens most often on very popular downloads (iTunes updates being the most common)
* Once observed, it will happen consistently, but only for the one specific update file, not for others (for example, Software Update can successfully load other packages, but fail on the "problem" file)
* The download fails near the end, typically about 1 megabyte before the end.
* Failure manifests itself as a starvation timeout (HTTP server fails to send next block of data after repeated requests by client at other end of TCP connection)
* The timeout consistently happens at the same point in the transfer.
* Success downloading from the Apple Support website is unrelated to success/failure at downloading it through the Software Update program.
* If the URL is determined (by looking in the index catalog file) the transfer can be attempted with a command-line tool, or by pasting the URL into the Safari downloads window -- or even from a Windows computer. In all cases, the transfer proceeds to the same point and then times out.
And notably, I have found one workaround:
The file can usually be successfully downloaded from "another part of the internet".
This might mean using another system located in your city but that gets its internet connection from another provider, or logging in to a system far away and downloading it there.
The nature of the workaround implies that
the bug is caused by improper proxy cache server implementation. I suspect it is Akamai's responsibility.
Robert Munafo