bought Seagate NAS HDD ST2000VN000 2TB 64MB Cache SATA 6.0Gb/s Internal Hard Drive for storage. using Thermaltake BlacX N0028USU External Hard Drive SATA Enclosure Docking Station 2.5" & 3.5" USB 2.0 for transfer data from notebook del with win7. With seagate diskWizard formated disk. when i copy bigger files 1gb up after 15sekund transfer stops and freeze. i have to cancel unfinished transfer..... happen every time......... doesn't happen with small files , maybe because transfer is finished before 15s time. can somebody help me... thank you sssooooo much.