Second time I test http://www.graal.in/downloads today.
http://files01.opengraal.com/downloads/graal_reborn.7z results 500 Internal Server Error
http://files02.opengraal.com/downloads/graal_reborn.7z no answer
http://files03.opengraal.com/files/graal_reborn.7z Ok
http://files.opengraal.net/graal_reborn.7z Ok
http://files.opengraal.net/graal_reborn.7z no answer
I begin to suspect that the many links were because place where the file is stored change over time.