Tomcat not removing files when using undeploy task

I am using Tomcat 6.0.14 for a new project and Maven2 for build management. Recently I wanted to deploy and undeploy my webapp using the Maven2 cargo plugin. Deploy works fine, but undeploy does not remove all JARs in the webapp and work directory of my Tomcat installation.
This seems to be a general issue with the Tomcat Manager component. To avoid these problems simply put the following attributes into your context.xml

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antiJARLocking="true"
antiResourceLocking="true"

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