diff --git a/pandora_agents/unix/ChangeLog b/pandora_agents/unix/ChangeLog
index b43451494b..aab9893bc2 100644
--- a/pandora_agents/unix/ChangeLog
+++ b/pandora_agents/unix/ChangeLog
@@ -1,3 +1,9 @@
+2011-09-13  Koichiro Kikuchi <koichiro@rworks.jp>
+
+	* pandora_agent: Clear the old process information before
+	  parsing current process information. Also added
+	  missing load_procs() call to module_cpuproc().
+
 2011-09-05  Koichiro Kikuchi <koichiro@rworks.jp>
 
 	* pandora_agent_daemon: Added support for OpenVZ/Virtuozzo.
diff --git a/pandora_agents/unix/pandora_agent b/pandora_agents/unix/pandora_agent
index 3b328c07d3..b1d87d3395 100755
--- a/pandora_agents/unix/pandora_agent
+++ b/pandora_agents/unix/pandora_agent
@@ -1016,6 +1016,9 @@ sub load_procs () {
 	my @procs = `$cmd`;
 	return undef unless ($? eq 0);
 
+	# Clear past process infomation
+	%Procs = ();
+
 	# Parse process information
 	foreach my $proc (@procs) {
 
@@ -1162,6 +1165,9 @@ sub module_cpuproc ($) {
 	# Check module parameters
 	return () unless ($module->{'params'} ne '');
 
+	# Data collection layer
+	load_procs ();
+
 	return () unless defined ($Procs{$module->{'params'}}) and defined ($Procs{$module->{'params'}}{'cpu'});
 	return ($Procs{$module->{'params'}}{'cpu'});
 }