Pentaho error

Hi, i am still new with the pentaho BI and much appreciate if you guys could assist me on the following error while starting the tomcat pentaho.

Jul 29, 2013 9:45:49 AM org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
SEVERE: The web application [/pentaho] created a ThreadLocal with key of type [java.lang.InheritableThreadLocal] (value [java.lang.InheritableThreadLocal@1de0b09]) and
a value of type [org.pentaho.platform.engine.security.session.TrustedSystemStartupSession] (value [org.pentaho.platform.engine.security.session.TrustedSystemStartupSess
ion@15a4a77]) but failed to remove it when the web application was stopped. This is very likely to create a memory leak.
Jul 29, 2013 9:45:50 AM org.apache.coyote.http11.Http11Protocol destroy
INFO: Stopping Coyote HTTP/1.1 on http-8280


Thanks