All the bugs found have a similar message:

File: Role.java, Type: MS_SHOULD_BE_FINAL, Priority: High, Category: CORRECTNESS

TEST: Unknown warning MS_SHOULD_BE_FINAL in com.oursite.util.Role.HOTEL_ADMIN;
core bug patterns not found

A warning was recorded, but findbugs can't find the description of this bug
pattern and so can't describe it. This should occur only in cases of a bug in
FindBugs or its configuration, or perhaps if an analysis was generated using a
plugin, but that plugin is not currently loaded.

I am using Hudson 1.200, findbugs plugin 2.2, FindBugs 1.3.2, ant 1.7 and jdk
1.6 and I am also using ant deployment.

I use Hudson with jboss-4.2.0.GA and have it set up to use container security.
I have the unpacked hudson war file because I needed to change some settings for
security.
It is under: /usr/jbosses/current/server/default/deploy/hudson.war/

findbugs-1.3.2.jar is under $HUDSON_HOME/plugins/findbugs/WEB-INF/lib

ls $HUDSON_HOME/plugins/findbugs/WEB-INF/lib

annotations-1.0.0.jar asm-analysis-3.0.jar asm-tree-3.0.jar asm-xml-3.0.jar
commons-lang-2.3.jar dom4j-1.3.jar java2html-5.0.jar localizer-1.5.jar
asm-3.0.jar asm-commons-3.0.jar asm-util-3.0.jar bcel-1.3.2.jar
coreplugin-1.3.2.jar findbugs-1.3.2.jar jsr305-1.3.2.jar

where $HUDSON_HOME is /usr/hudson