[xwiki-users] crash on tomcat 7.0.47 with xwiki 5.4.2

Hello, With xwiki 5.4.1 I hadn't crash of xwiki but with the last version 5.4.2 I have 2 crash per day... Log indicate : "java.lang.OutOfMemoryError: PermGen space" Here my catalina.sh JAVA_OPTS="-server -Xms800m -Xmx800m -XX:PermSize=64M -XX:MaxPermSize=196m -Dfile.encoding=utf-8 -Djava.awt.headless=true -XX:+UseParallelGC -XX:MaxGCPauseMillis=100 -Dhttp.proxyHost=beast.dom.cpii.i2 -Dhttp.proxyPort=8080" and the log 2014-03-12 10:25:34,306 [http://iwiki.cp2i.i2:8080/bin/view/Main/WebHome] ERROR c.x.x.w.XWikiAction            - Uncaught exceptions (inner):  com.xpn.xwiki.XWikiException: Error number 0 in 11: Uncaught exception         at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:317) ~[xwiki-platform-legacy-oldcore-5.4.2.jar:na]         at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:129) ~[xwiki-platform-legacy-oldcore-5.4.2.jar:na]         at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425) ~[struts-core-1.3.10.jar:1.3.10]         at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228) ~[struts-core-1.3.10.jar:1.3.10]         at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) ~[struts-core-1.3.10.jar:1.3.10]         at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449) ~[struts-core-1.3.10.jar:1.3.10]         at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) ~[servlet-api.jar:na]         at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) ~[servlet-api.jar:na]         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) ~[catalina.jar:7.0.47]         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) ~[catalina.jar:7.0.47]         at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:121) ~[xwiki-platform-legacy-oldcore-5.4.2.jar:na]         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) ~[catalina.jar:7.0.47]         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) ~[catalina.jar:7.0.47]         at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:126) ~[xwiki-platform-wysiwyg-server-5.4.2.jar:na]         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) ~[catalina.jar:7.0.47]         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) ~[catalina.jar:7.0.47]         at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) ~[tomcat7-websocket.jar:7.0.47]         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) ~[catalina.jar:7.0.47]         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) ~[catalina.jar:7.0.47]         at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66) ~[xwiki-platform-webdav-server-5.4.2.jar:na]         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) ~[catalina.jar:7.0.47]         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) ~[catalina.jar:7.0.47]         at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) ~[xwiki-platform-container-servlet-5.4.2.jar:na]         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) ~[catalina.jar:7.0.47]         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) ~[catalina.jar:7.0.47]         at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) ~[xwiki-platform-container-servlet-5.4.2.jar:na]         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) ~[catalina.jar:7.0.47]         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) ~[catalina.jar:7.0.47]         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) ~[catalina.jar:7.0.47]         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) ~[catalina.jar:7.0.47]         at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) ~[catalina.jar:7.0.47]         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) ~[catalina.jar:7.0.47]         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) ~[catalina.jar:7.0.47]         at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) ~[catalina.jar:7.0.47]         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) ~[catalina.jar:7.0.47]         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) ~[catalina.jar:7.0.47]         at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) ~[tomcat-coyote.jar:7.0.47]         at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) ~[tomcat-coyote.jar:7.0.47]         at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) ~[tomcat-coyote.jar:7.0.47]         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) ~[na:1.7.0_25]         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) ~[na:1.7.0_25]         at java.lang.Thread.run(Thread.java:724) ~[na:1.7.0_25] java.lang.OutOfMemoryError: PermGen space I use UI, FAQ and newsletters extension. Any idea?