It would appear the Seagate 320Gb drive I’ve been using in an external case decided to start giving some errors. It ONLY started to happen once the drive got certain capacity. Lost a number of days of recorded TV as the drive is used as my recording drive for my Mac Mini.
Ran Seatools over the drive it has about 90+ LBA surface errors. Repair completes, but short test fails again with a new one. Looks as though it is terminal. I managed to pull most data off the drive, but the recorded programs in the section of the LBA surface errors would not be obtainable. Oh well.
Replaced it with a Samsung 500Gb drive which I purchased yesterday. This new drive is SO quiet, not to mention very well priced.