Sonar and Maven
Fact to know: though it does not say so in the documentation, Sonar requires a fairly recent version of Maven. Version 2.0.4 failed, but 2.0.8 worked.
Also, do not forget to force update of all dependencies, especially plugins.
So, when running the Sonar plugin, add -U and -cpu:
mvn org.codehaus.sonar:sonar-maven-plugin:1.2:sonar -U -cpu

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