Well people I've bought a 1TB hard disk so I'm going to sell this hard disk.
This is the 7200.9 version which means it was before all the firmware fiasco that Seagate has just got out of.
This HD has been running flawlessly and never had any problems with it. Still under warranty directly from seagate until 2012.
This is the ST3400633AS version of the seagate HD, 7200rpm and I'm pretty sure it has 16mb cache.
Looking for £45 delivered. I think it's price fairly for a reliable Seagate harddisk.