In the book, Banks mentions early on that the local wormhole (I believe he calls it Arteria) was destroyed 250 years ago, and the system (Ulubis) is awaiting the delivery of a new one, some 17 years down the road.
A bit later, he says that the character Saluus went on a galaxy wide pleasure cruise, using the "Ulubis-system portal...on his long vacation last year."
What am I missing? The portal was destroyed 250 years ago, so how did Saluus use it "last year"?