Ahh, to hell with it. Maybe it gets better, maybe it doesn't. I got bored and stopped reading already.
Errr ... but 5400 RPM Seagate beats a 7200 RPM Hitachi? Seek times near enough to the same, same cache, same interface ..... sounds pretty suss to me. Either we have a chipset problem (well, it is an Intel, which ain't a great start), or we have a howling dud of a drive (from Hitachi? That bad - I can't see it) or else we have a measurement problem. Got to be (a) or (c), you'd think. Someone else can figure it out. I'm bored already.