Assuming this is still the place to log these things...
JBoss Admin & Development book, dated Jan 13, 2003:
Page 273, in XML file listing: an extraneous "</" at the end of the <url-pattern> line.
Page 287, bottom: "The details of the implementation are interesting in that it offers..." should probably read something like "The details of the implementation are interesting in that they offer..."
Page 291: "and this is labeled Client Side Login in Figure 8-7"... Figure 8-7 doesn't have a label like that... and, there's a similar reference on page 292 to the same Figure 8-7 for a "Home Method Invocation" label which doesn't seem to be in Figure 8-7.
Page 299, example at the bottom: the line should read:
"roles=TheDuke,AnimatedCharacter;"
(the typo is currently showing ...AnimatedCharater"...)
Page 326, last paragraph: sentence reads "... and now its time to demonstrate" should say "it's time" rather than "its time"
Don