java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
	at java.util.HashMap$KeyIterator.next(HashMap.java:828)
	at com.mysql.jdbc.ConnectionImpl.closeAllOpenStatements(ConnectionImpl.java:1575)
	at com.mysql.jdbc.ConnectionImpl.realClose(ConnectionImpl.java:4364)
	at com.mysql.jdbc.ConnectionImpl.close(ConnectionImpl.java:1556)
	at com.batix.SingleConnectionPool.freeConnection(SingleConnectionPool.java:128)
	at com.batix.ConnectionPool.freeConnection(ConnectionPool.java:157)
	at com.batix.tags.AbstractPage.removeConnection(AbstractPage.java:176)
	at com.batix.tags.FrontendServlet.service(FrontendServlet.java:463)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:659)
	at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:565)
	at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:493)
	at com.batix.tags.JspincludeTag.dispatchRequest(JspincludeTag.java:164)
	at com.batix.tags.JspincludeTag.addFromRealJspInclude(JspincludeTag.java:138)
	at com.batix.tags.PageincludeTag.addFrontendSourceText(PageincludeTag.java:56)
	at com.batix.tags.BatixDesignTag.computeFrontend(BatixDesignTag.java:755)
	at com.batix.tags.BatixDesignTag.computeFrontend(BatixDesignTag.java:704)
	at com.batix.tags.IncludeTag.addFrontendSourceText(IncludeTag.java:71)
	at com.batix.tags.BatixDesignTag.computeFrontend(BatixDesignTag.java:755)
	at com.batix.tags.BatixDesignTag.computeFrontend(BatixDesignTag.java:704)
	at com.batix.tags.FrontendPage.buildPage(FrontendPage.java:603)
	at com.batix.tags.FrontendServlet.service(FrontendServlet.java:434)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
	at com.batix.util.PageLogFilter.doFilter(PageLogFilter.java:61)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
	at com.batix.tags.FrontendFilter.doFilter(FrontendFilter.java:111)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)
	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)
	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
	at java.lang.Thread.run(Thread.java:662)