Unfortunately for you Beanz, you have ordered a Sandy Bridge based PC right at the start of a huge recall process by Intel. The performance advantages of the Sandy bridge are huge, but no matter what supplier you had used, you'd still be caught up in it as far as delivery and\or service goes.
As far as the recall goes, Intel WILL sort it (they put aside $6Billion to rectify it!), but hopefully this will have already been done for the PC you get. The actual problem means that the pc will eventually cause a fault and not be able to speak to the hard disk in about 5% of cases over a 3yr period - which is a high rate of returns for Intel stuff, potentially damaging to the Intel brand and the reason they have jumped on it so quickly.
Even if you end up with the defective Sandy bridge, it will have a few years before you saw any symptoms if at all, by which time it would have been swapped out (Intel are paying for this to be done on site wherever possible).
This company doesn't seem to be giving you much reassurance though and that is the kicker. You may have a PC next week or next month, if the former then fine and well, if the latter then you'd obviously cancel and go elsewhere only to effectively start all over again from scratch. Frustrating indeed.
I am still crossing my fingers for you and hoping the supplier starts to actually try and reassure you about this.