Rocketboy,

The most likely cause is, that I have been told is the plastic/metal clips that hold them together. I dopn't know if the car has them and in what condition they are, but they are supposed to prevent the lines tight together so that virbrations are less. By the looks of it they have suffered from metal fatigue.
You IP looks pretty clean...at least cleaner that my one looked like, I had a gasket missing between EGR and inlet-manifold, and it looked like it had been covered with a layer of tarmac.

My advice is also to change the return hoses (the greenish ones), they do not seem to be MB. The MB has a cover of textile, and does not leak after xK miles in my experience. The costss.. around 10 Euro/meter (soory for the metric units, but I gues 10-15 dollars on average.



Cheers,
Ingmar