diff --git a/pandora_server/ChangeLog b/pandora_server/ChangeLog
index bddcee6c1e..301d3fa326 100644
--- a/pandora_server/ChangeLog
+++ b/pandora_server/ChangeLog
@@ -1,3 +1,12 @@
+2010-01-21  Sancho Lerena <slerena@artica.es>
+
+	* pandora_server.spec: Fixed spec to be more compatible with other
+	RPM distros.
+
+	* lib/PandoraFMS/NetworkServer.pm: Fixed ugly/noisy message "Use of
+	uninitialized value $output in string eq at /usr/local/share/perl
+	/5.10.0/PandoraFMS/NetworkServer.pm line 268".
+
 2010-01-21	Pablo de la Concepción <pablo.concepcion@artica.es>
 
 	* lib/PandoraFMS/Core.pm: Modified to unify create and update functions
diff --git a/pandora_server/lib/PandoraFMS/NetworkServer.pm b/pandora_server/lib/PandoraFMS/NetworkServer.pm
index 5e2e36e567..502bd019b8 100644
--- a/pandora_server/lib/PandoraFMS/NetworkServer.pm
+++ b/pandora_server/lib/PandoraFMS/NetworkServer.pm
@@ -264,7 +264,8 @@ sub pandora_query_snmp (%$$$$$) {
 
 	$_[5] = 0;
 	my $snmpget_cmd = $pa_config->{"snmpget"};
-	my $output = `$snmpget_cmd -v $snmp_version -r $snmp_retries -t $snmp_timeout -OUevqt -c $snmp_community $snmp_target $snmp_oid 2>/dev/null`;
+	my $output = "";
+	$output = `$snmpget_cmd -v $snmp_version -r $snmp_retries -t $snmp_timeout -OUevqt -c $snmp_community $snmp_target $snmp_oid 2>/dev/null`;
 	if ($output eq ""){
 		$_[5] = 1;
 	}
diff --git a/pandora_server/pandora_server.spec b/pandora_server/pandora_server.spec
index 6fdcfd7a31..b7b6ddece6 100644
--- a/pandora_server/pandora_server.spec
+++ b/pandora_server/pandora_server.spec
@@ -81,8 +81,8 @@ fi
 exit 0
 
 %post
-chkconfig -s pandora_server on 
-chkconfig -s tentacle_serverd on 
+chkconfig pandora_server on 
+chkconfig tentacle_serverd on 
 
 echo "/usr/share/pandora_server/util/pandora_db.pl /etc/pandora/pandora_server.conf" > /etc/cron.daily/pandora_db
 chmod 750 /etc/cron.daily/pandora_db
@@ -107,8 +107,8 @@ echo "data using tentacle"
 %preun
 /etc/init.d/pandora_server stop &>/dev/null
 /etc/init.d/tentacle_serverd stop &>/dev/null
-chkconfig -d pandora_server
-chkconfig -d tentacle_serverd
+chkconfig --del pandora_server
+chkconfig --del tentacle_serverd
 
 %postun
 rm -Rf /etc/init.d/tentacle_serverd