Guys,
Yes they are in a stripe set, for the speed, and it is fast

Deskstars have a recent bad rep because they decided to use a glass platter, this has turned out to be less then durable, however the 38Gb drives I have do not use this technology.
I work as a Oracle DBA so I am aware of the pros and cons of differant RAID configs, I spend a fair amount of time explaining this to new customers for hardware scoping

The disks do click when the problem occurs, but if it is the disks and not the hipoint controller then why does scandisk not turn up and mark as bad the dodgy sectors?
Also all modern disks spare faulty tracks transparently, and assuming it has run out of spare tracks to spare then the problem, I would think, should be getting rapidly worse.
However the problem seems to be getting no worse and no better.
I am confused. I have built the last 3 systems I have used by hand so I know the ropes, but as MrRipley says the Abit board has been troublesome from day one.
If I can identify the issue 100% then I can move forward, but as it is I just don't know what the problem is, and more importantly I don't seem to be getting any nearer to finding the problem.