Windows 7 Build 7137 upped by Zukonka, the real thing. Hashes match:
File Name: 7137.0.090521-1745_x64fre_client_en-us_Retail_Ultimate-GRMCULXFRER_EN_DVD.iso.torrent
MD5: 0d863472414efc337d032e8ed33c347b
SHA1: 8e35d15281a554fd890ad682249e485b9b82278c
CRC32: 06047573