[Building Sakai] Tomcat Error-- Catalina.out contents

[Gautham]

ONLY LINES in "C:\opt\tomcat\logs" location: 

Jan 27, 2011 12:19:09 PM net.sf.ehcache.Cache initialise
WARNING: Cache: org.sakaiproject.mailsender.logic.ComposeLogic.groupsCache
has a maxElementsInMemory of 0. It is strongly recommended to have a
maximumSize of at least 1. Performance is halved by not using a MemoryStore.
http://old.nabble.com/file/p30776778/catalina.2011-01-27.log
catalina.2011-01-27.log 
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