Over the week-end I really blitzed the last chapter (12) on 'spoken dialogue systems' and produced 5,000 words, which is OK. This is now out for review - it's titled 'Machines Who Talk'.
My other major task was to incorporate the anonymous reviewer's comments, which mostly involved adding material about GMPLS, Grid Computing, SONET and a review of current 'Internet2'-type systems.
I am now just fine-tuning and rewriting the odd point here and there, and tomorrow I will review again the last three chapters. Once comments are back from the various people who are looking at material, I think this is about ready to ship :-)