Thank you for this very qucik reply John, the output is:

./rhq-agent.sh --nonative
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGFPE (0x8) at pc=0x00002b592b3d668f, pid=13696, tid=1074792768
#
# JRE version: 7.0_07-b10
# Java VM: Java HotSpot(TM) 64-Bit Server VM (23.3-b01 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C  [ld-linux-x86-64.so.2+0x868f]  do_lookup_x+0xcf
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /opt/jboss_opo/rhq-agent/hs_err_pid13696.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.sun.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
./rhq-agent.sh: line 275: 13696 Aborted                 "/opt/jboss_opo/jdk1.7.0_07/bin/java" "-Djava.endorsed.dirs=/opt/jboss_opo/rhq-agent/lib/endorsed" "-Djava.library.path=/opt/jboss_opo/rhq-agent/lib" -Xms512m -Xmx512m -Djava.net.preferIPv4Stack=true -Dlog4j.configuration=log4j.xml -cp "/opt/jboss_opo/rhq-agent/conf:/opt/jboss_opo/rhq-agent/lib/commons-io-1.4.jar:/opt/jboss_opo/rhq-agent/lib/commons-logging-1.1.0.jboss.jar:/opt/jboss_opo/rhq-agent/lib/concurrent-1.3.4-jboss-update1.jar:/opt/jboss_opo/rhq-agent/lib/dom4j-1.6.jar:/opt/jboss_opo/rhq-agent/lib/getopt-1.0.13.jar:/opt/jboss_opo/rhq-agent/lib/i18nlog-1.0.10.jar:/opt/jboss_opo/rhq-agent/lib/jboss-common-1.2.1.GA.jar:/opt/jboss_opo/rhq-agent/lib/jboss-jmx-4.2.3.GA.jar:/opt/jboss_opo/rhq-agent/lib/jboss-remoting-2.2.2.SP8.jar:/opt/jboss_opo/rhq-agent/lib/jboss-serialization-1.0.3.GA.jar:/opt/jboss_opo/rhq-agent/lib/jline-0.9.94.jar:/opt/jboss_opo/rhq-agent/lib/log4j-1.2.16.jar:/opt/jboss_opo/rhq-agent/lib/persistence-api-1.0.jar:/opt/jboss_opo/rhq-agent/lib/rhq-common-drift-4.5.1.jar:/opt/jboss_opo/rhq-agent/lib/rhq-core-client-api-4.5.1.jar:/opt/jboss_opo/rhq-agent/lib/rhq-core-comm-api-4.5.1.jar:/opt/jboss_opo/rhq-agent/lib/rhq-core-domain-4.5.1.jar:/opt/jboss_opo/rhq-agent/lib/rhq-core-native-system-4.5.1.jar:/opt/jboss_opo/rhq-agent/lib/rhq-core-plugin-api-4.5.1.jar:/opt/jboss_opo/rhq-agent/lib/rhq-core-plugin-container-4.5.1.jar:/opt/jboss_opo/rhq-agent/lib/rhq-core-util-4.5.1.jar:/opt/jboss_opo/rhq-agent/lib/rhq-enterprise-agent-4.5.1.jar:/opt/jboss_opo/rhq-agent/lib/rhq-enterprise-comm-4.5.1.jar:/opt/jboss_opo/rhq-agent/lib/sigar-1.6.5.132-3.jar" org.rhq.enterprise.agent.AgentMain --nonative

  I have also attached the hs_err file.

I was able to install RHQ 4.3.0 but non most updated versions (4.4.0 and 4.5.1).

I guess it is related to the OS version.

Hi Stefan,

  This is very good news and I would like to thank you for your work.

  I will try to install 4.5.1 and delete all sigar libraries (which I suppose are the files with the name "sigar" in it, not more, right?) and I will update you.

  Regarding 4.6.0, do you have any release date?

Regards,

Rudy

Stefan,

I have deleted the following files from the "rhq-agent/lib" dir:

libsigar-amd64-freebsd-6.so
libsigar-amd64-linux.so
libsigar-amd64-solaris.so
libsigar-ia64-hpux-11.sl
libsigar-ia64-linux.so
libsigar-pa-hpux-11.sl
libsigar-ppc-aix-5.so
libsigar-ppc-linux.so
libsigar-ppc64-aix-5.so
libsigar-ppc64-linux.so
libsigar-s390x-linux.so
libsigar-sparc-solaris.so
libsigar-sparc64-solaris.so
libsigar-universal-macosx.dylib
libsigar-universal64-macosx.dylib
libsigar-x86-freebsd-5.so
libsigar-x86-freebsd-6.so
libsigar-x86-linux.so
libsigar-x86-solaris.so
sigar-1.6.5.132-3.jar
sigar-amd64-winnt.dll
sigar-x86-winnt.dll

Now by running "./rhq-agent.sh --setup", I get the following output in the agent.log file:

2012-11-06 09:47:50,863 WARN [main] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.native-sysinfo-unavailable}Native system info is enabled, but the system info API is not accessible on this platform (sigar.jar not found in classpath
or SIGAR shared library not found in shared library path). Enable DEBUG logging for more details.
2012-11-06 09:47:50,880 INFO [main] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.identify-version}Version=[RHQ 4.5.1], Build Number=[c880f5a], Build Date=[Oct 2, 2012 9:08 PM]
2012-11-06 09:48:02,326 INFO [main] (org.rhq.enterprise.communications.ServiceContainer)- {ServiceContainer.global-concurrency-limit-disabled}Global concurrency limit has been disabled - there is no limit to the number of incoming comm
ands allowed
2012-11-06 09:48:02,456 INFO [main] (org.rhq.enterprise.communications.ServiceContainer)- {ServiceContainer.started}Service container started - ready to accept incoming commands
2012-11-06 09:48:02,457 INFO [main] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.no-auto-detect}Server auto-detection is not enabled - starting the poller immediately
jboss_opo@mucwhp111:~/rhq-agent/logs> tail -f agent.log
2012-11-06 09:47:50,863 WARN [main] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.native-sysinfo-unavailable}Native system info is enabled, but the system info API is not accessible on this platform (sigar.jar not found in classpath or SIGAR shared library not found in shared library path). Enable DEBUG logging for more details.
2012-11-06 09:47:50,880 INFO [main] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.identify-version}Version=[RHQ 4.5.1], Build Number=[c880f5a], Build Date=[Oct 2, 2012 9:08 PM]
2012-11-06 09:48:02,326 INFO [main] (org.rhq.enterprise.communications.ServiceContainer)- {ServiceContainer.global-concurrency-limit-disabled}Global concurrency limit has been disabled - there is no limit to the number of incoming commands allowed
2012-11-06 09:48:02,456 INFO [main] (org.rhq.enterprise.communications.ServiceContainer)- {ServiceContainer.started}Service container started - ready to accept incoming commands
2012-11-06 09:48:02,457 INFO [main] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.no-auto-detect}Server auto-detection is not enabled - starting the poller immediately
2012-11-06 09:49:02,528 INFO [main] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.waiting-for-plugins-with-dir}The agent does not have plugins - it will now wait for them to be downloaded to [plugins]...
2012-11-06 09:49:04,537 WARN [main] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.plugin-update-failure}Failed to update the plugins.. Cause: java.lang.IllegalStateException: The sender object is currently not sending commands now. Command not sent: [Command: type=[remotepojo]; cmd-in-response=[false]; config=[{rhq.send-throttle=true}]; params=[{invocation=NameBasedInvocation[getLatestPlugins], targetInterfaceName=org.rhq.core.clientapi.server.core.CoreServerService}]]
2012-11-06 09:49:06,544 WARN [main] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.plugin-update-failure}Failed to update the plugins.. Cause: java.lang.IllegalStateException: The sender object is currently not sending commands now. Command not sent: [Command: type=[remotepojo]; cmd-in-response=[false]; config=[{rhq.send-throttle=true}]; params=[{invocation=NameBasedInvocation[getLatestPlugins], targetInterfaceName=org.rhq.core.clientapi.server.core.CoreServerService}]]
2012-11-06 09:49:08,548 WARN [main] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.plugin-update-failure}Failed to update the plugins.. Cause: java.lang.IllegalStateException: The sender object is currently not sending commands now. Command not sent: [Command: type=[remotepojo]; cmd-in-response=[false]; config=[{rhq.send-throttle=true}]; params=[{invocation=NameBasedInvocation[getLatestPlugins], targetInterfaceName=org.rhq.core.clientapi.server.core.CoreServerService}]]
2012-11-06 09:49:10,552 WARN [main] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.plugin-update-failure}Failed to update the plugins.. Cause: java.lang.IllegalStateException: The sender object is currently not sending commands now. Command not sent: [Command: type=[remotepojo]; cmd-in-response=[false]; config=[{rhq.send-throttle=true}]; params=[{invocation=NameBasedInvocation[getLatestPlugins], targetInterfaceName=org.rhq.core.clientapi.server.core.CoreServerService}]]
2012-11-06 09:49:12,557 WARN [main] (org.rhq.enterprise.agent.AgentMain)- {AgentMain.plugin-update-failure}Failed to update the plugins.. Cause: java.lang.IllegalStateException: The sender object is currently not sending commands now. Command not sent: [Command: type=[remotepojo]; cmd-in-response=[false]; config=[{rhq.send-throttle=true}]; params=[{invocation=NameBasedInvocation[getLatestPlugins], targetInterfaceName=org.rhq.core.clientapi.server.core.CoreServerService}]]

If it can interest you.

Rudy