Information:
I have to add that i get an Error while stopping Tomcat but i think that they different problems.
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[some more errors like the follow ones]
SCHWERWIEGEND: The web application [] created a ThreadLocal with key of type [org.apache.tools.ant.Project$1] (value [org.apache.tools.ant.Project$1@1cf3d]) and a value of type [java.lang.Boolean] (value [false]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
26.09.2012 10:47:52 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SCHWERWIEGEND: The web application [] created a ThreadLocal with key of type [org.kohsuke.stapler.Stapler$1] (value [org.kohsuke.stapler.Stapler$1@18af3ef]) and a value of type [java.text.SimpleDateFormat] (value [java.text.SimpleDateFormat@c4dc9900]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
26.09.2012 10:47:52 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SCHWERWIEGEND: The web application [] created a ThreadLocal with key of type [net.sf.json.AbstractJSON$1] (value [net.sf.json.AbstractJSON$1@194e11d]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
26.09.2012 10:47:52 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
...
And i have to kill the tomcat process.