Following message is seen in the server log for all regression test run on Tomca6 server.
It is causing problems in our log reports.

May 15, 2010 11:21:58 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: A web application appears to have started a thread named [Session Monitor] but has failed to stop it. This is very likely to create a memory leak.
May 15, 2010 11:21:58 PM org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
SEVERE: A web application created a ThreadLocal with key of type [org.icefaces.application.WindowScopeManager.CurrentScopeThreadLocal] (value [org.icefaces.application.WindowScopeManager$CurrentScopeThreadLocal@38d748]) and a value of type [java.lang.String] (value [psg99f5dt2]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.
May 15, 2010 11:21:58 PM org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
SEVERE: A web application created a ThreadLocal with key of type [org.icefaces.application.WindowScopeManager.CurrentScopeThreadLocal] (value [org.icefaces.application.WindowScopeManager$CurrentScopeThreadLocal@38d748]) and a value of type [java.lang.String] (value [psg99f5dt2]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.
May 15, 2010 11:21:58 PM org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
SEVERE: A web application created a ThreadLocal with key of type [org.icefaces.application.WindowScopeManager.CurrentScopeThreadLocal] (value [org.icefaces.application.WindowScopeManager$CurrentScopeThreadLocal@38d748]) and a value of type [java.lang.String] (value [psg99f5dt2]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.
May 15, 2010 11:21:58 PM org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
SEVERE: A web application created a ThreadLocal with key of type [org.icefaces.application.WindowScopeManager.CurrentScopeThreadLocal] (value [org.icefaces.application.WindowScopeManager$CurrentScopeThreadLocal@38d748]) and a value of type [java.lang.String] (value [psg99f5dt2]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.
May 15, 2010 11:21:58 PM org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
SEVERE: A web application created a ThreadLocal with key of type [org.icefaces.application.WindowScopeManager.CurrentScopeThreadLocal] (value [org.icefaces.application.WindowScopeManager$CurrentScopeThreadLocal@38d748]) and a value of type [java.lang.String] (value [psg99f5dt2]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.
May 15, 2010 11:21:59 PM org.apache.catalina.startup.HostConfig checkResources
INFO: Undeploying context [/ICE-751]