On p. 76, in the subsection "Automatic detection of metadata", it says "after switching to DEBUG logging for the org.hibernate package". I assume this would be done by changing the log4j.properties file, changing "INFO" to "DEBUG" for that package. I did that (in fact, I did it for all of them), but when I run the app after that change, I don't see any additional debug.

Just in case, I ran a file io monitor (FileMon) and watched it read my modified log4j.properties file. I also watched it read the persistence.xml file.