Scenario: 130GB of recordings transferred from Humax internal hard drive to external USB drive (NTFS using the custom NTFS driver, but that shouldn't make a difference) by SUI OPT+ to ensure decryption (the recordings had been unprotected). For reference, the copy took 21h56m (6GB/h). As a quality check, I looked at the original directory by FTP and compared it 1:1 with the copy (now mounted on the PC). All the files are there, with the following systematic difference: all the original .hmt files are 13.5, 14.2, or 14.9 KB in size, and all the (decrypted) copies are 2.02 KB. Curiosity: What accounts for the difference?