cURL error 28: Operation timed out after XXXXXX milliseconds with XXXXXX out of XXXXXX bytes received (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)

[Fjalar]

@Torin

A change in the /lib/private/Installer.php file may help
$ timeout = $ this-> isCLI? 0: 120; for example: 300

Fixed the problem for me. Cheers!