title: ActiveMQ 5.5.1 broker did not start in linux
body: <p>i downloaded latest activemq 5.5.1 version and try to run it in Linux or Saloris, both failed with below messsage</p>
  
  <p>./activemq start </p>
  
  <p>INFO: Loading '/myhome/.activemqrc'
  INFO: Using java '/myjdk/jdk-1.6.0-25-64/bin/java'
  INFO: Starting - inspect logfiles specified in logging.properties and log4j.properties to get details
  INFO: pidfile created : '/myhome/activemq_5_5_1/apache-activemq-5.5.1/data/activemq.pid' (pid '16067')</p>
  
  <p>the same thing happens if I use commands like below
  ./activemq start xbean:file:/myhome/activemq_5_5_1/apache-activemq-5.5.1/conf/activemq.xml</p>
  
  <p>Linux info:
  OS:
   2.6.18-194.26.1.el5 #1 SMP Fri Oct 29 14:21:16 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
  JDK:
  java version "1.6.0_25"
  Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
  Java HotSpot(TM) 64-Bit Server VM (build 20.0-b11, mixed mode)</p>
  
  <p>Unix info:
  SunOS 5.10
  JDK:
  java version "1.6.0_17"
  Java(TM) SE Runtime Environment (build 1.6.0_17-b04)
  Java HotSpot(TM) Server VM (build 14.3-b01, mixed mode)</p>