Just so everyone's aware...
The TSM 5.3 Technical Guide redbook is available, in draft form:
http://www.redbooks.ibm.com/redpieces/abstracts/sg246638.html

To new participants: The Technical Guide redbook is the meaty
summary of new features in each TSM release, and is "must"
reading for best understanding of the product.

Note:  - There is no 5.2 Technical Guide - an omission in the series.
         The preface in this 5.3 guide says that this guide covers
         things new since 5.1.
       - The TSM SQL doc which used to be a staple in the
         appendix has been discontinued in the guide.

Our thanks to IBM and the non-IBMers who took part in the residency
to produce this valuable guide. Click in the Rating area of the web
page to indicate your appreciation for this guide, and keep them
coming.

 Richard Sims    http://people.bu.edu/rbs