I always get my tracking done at least once a year, regardless of whether I've had new tyres or anything fitted, as its amazing what little effort it can take to knock it out as Pink has found. I don't think its the way it was setup when it left the Ford factory though, more just the abuse the suspension takes from the rutted, pot-holed roads we have in this country.

For anyone in the Hampshire area, I can thoroughly recommend Supertracker in Southampton. They actually make the laser alignment rigs so you'd struggle to find anyone who knows more about tracking and suspension geometry than them, plus it only costs about £40 for all 4 wheels. They can also do bloody cheap (i.e. trade price) tyres but thats another story...