As was said above, check the interface speed jumper and set it to match the capabilities of your controller (SATA 1=150MB/s, SATA 2 = 300MB/s). I just got a Hitachi 7K160 that is set to SATA 2 by default and it "plays dead" (IOW it doesn't even spin up) unless it detects a compatible controller - so I RMAd what was probably a perfectly good drive. Luckily every other HDD maker uses a jumper to set the speed while Hitachi went with software - stupid move IMO. And download the drive installation guide from Seagate's web site in case there is something else in there and check for troubleshooting info there as well.
Many of the new SATA drives will be compatible with the new spec about having their motors started by the controller (with delay available, so if you have a lot of drives they all won't be pulling startup current at the same time - easier on the PSUs) so we will be seeing more of this "Play Dead" behavior, unfortunately... Used to be that if you just hooked up power and flipped the switch on, the drives would spin up without even being connected to the controller. Not any more I guess. I think if you jumper to SATA 150, it also sets the motor to start on power as many SATA 1 controllers don't send the motor start signal. At least that's what I'm counting on when I get my new controller on Monday to set my replacement back to SATA 150. Or it might not work with my mobo's integrated conroller (in the Via 8237 southbridge) even then...
Your friend should have read the reviews of the new 7200.10 series (they tested them all) on Tom's Hardware as they show that the drives that don't use the full platter capacity (like the 250GB model) are faster than the ones that do (like the 320GB models)... Sorry 'bout dat!
.bh.
PS: The Seagate 7200.10 SATA drives requre a controller that supports Autonegotiation. If such is not present, jumper the drive to 150MB/sec or buy a controller that supports it. I found this in the Seagate 7200.10 SATA reference manual - link is on the 7200.10 product page all the way to the right. It's a 68-page .PDF file. The info is in section 3.2 on page 40. .bh.