Yes, done that already. The box says Verbatim, and it's Verbatim who have referred my problem to "our technicians". That was a while ago, and no further reply have I had.
Windows 7 identifies it as "Samsung HD103SI SCSI Disk Device" which is interesting indeed, since there is no SCSI stuff on this PC. My trusty old SCSI card won't work with Win 7 since Adaptec haven't written a driver for it - and anyway the drive has an eSATA connector and not a SCSI one.