I know a few people with 70,000 miles on their D3's/LR3's, the trucks are great. That article you linked to needs to be qualified in a few ways:
1. It is a UK base model, that does not have many of the standard items the US model has (such as exterior temp gauge, etc...)
2. Every mfr has a few vehicles that come off the line with more than their share of problems. Seems this guy has a knack for picking them out! That does not mean the entire production run is faulty!
3. This guy is not very well educated on how the truck operates. He never scratched the surface of how to extract maximum value from the truck.
Go a step further. JD Power listed the LR3 near the bottom in Initial Quality, but near the top in Owner satisfaction. What does that tell you? That these sophisticated vehicles are not like your standard Toyota appliance. However, they are superb vehicles that excel in a astonishing wide range of terrian, roads, and utility, with comfort and quiet poise throughout it all.
The downside? You will get to know your dealer's service department more than you might wish. But, ultimately, it's all under warrenty and the best news is that LR seems to have solved the 3 or 4 significantly consistent issues that people were experiencing. These trucks are very solid mechanically, and the most current software patches seems to be working great.
Buy it with the proper expectations, and you will be immensely satisified with it.