Mark Hull-Richter wrote:
I recently added a Seagate 400Gb SATA drive to my system, and it has been behaving strangely ... What is a good program out there that exercises a disk to give some assurance of errors or lack thereof?
I would recommend downloading and running the manufacturer's standalone disk-checking program (in this case, SeaTools). I have seen both false and true SMART errors from BIOS.