Is there a website or a wiki dedicated to dealing with the different problems encountered with this book. There are a number of little things that go wrong with programming AVR's that have simple solutions but can take a while to figure out.
For instance, the Makefile for Chapter 2, blinkLED project has the mcu target name as atmega168p but I needed to use atmega168 to make the project flash properly. I am using an ATmega168-20PU. I looked around a little and had a cursory glance at the mega168 datasheet and could not find the right product number. I just found the mega168P datasheet and there is the difference.
Sorry for the delay in responding to you. There is some confirmed and unconfirmed errata and solutions for this book that can be found here:
If what you're referring to isn't there, you may wish to submit some of your own and in general the authors are really good about responding to your inquiries.
Customer Service Rep,
see the change log