I've been working the last year on a new book, Using MRTG with RRDtool and Routers2. This is due for publishing before the end of the year!
When it is available to buy online I'll post a notification. In the meantime, anyone who is going to LISA08 will be able to reserve a pre-release copy for US$15 (normally it will be about $25 or $30 depending on the publisher). I'll be there and can let you have your copy at the MRTG BoF session. Let me know if you want a copy.
There is also a companion CD which holds the latest versions of all the software, lots of support software and utilities, and examples. This is sold at production costs only, currently US$5.50 or the ISO image will be able to be downloaded for free. This is just waiting for RRD1.3.1 to come out so it can be added to the disk.
UNIX Systems, ITSS, University of Auckland, NZ
Woe unto them that rise up early in the morning... -- Isaiah 5:11