World Download provider results:
ef checksum.full.rar :: 2011-07-14 :: Speed: 989 Kb/s
ef checksum [FullVersion] :: 2011-07-10 :: Speed: 1829 Kb/s
[HIGHSPEED] ef checksum :: 2011-07-13 :: Speed: 689 Kb/s
[TRUSTED DOWNLOAD] ef checksum :: 2011-07-15 :: Speed: 836 Kb/s
TORRENT.CD DOWNLOAD ef checksum :: 2010-10-15 :: Speed: 1537 Kb/s

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Site results:

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Crackdb.com results:
EF CheckSum Manager v4.10 :: 2 Kb :: 16.04.07
EF CheckSum Manager v4.40 :: 1 Kb :: 3.10.07
EF CheckSum Manager XP v3.40-NEC :: 84 Kb :: 24.02.06

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SerialNews.com results:
Sorry, no matches... :(