diff --git a/Shorewall-core/lib.cli b/Shorewall-core/lib.cli
index bc9318b77..4778ada32 100644
--- a/Shorewall-core/lib.cli
+++ b/Shorewall-core/lib.cli
@@ -4560,6 +4560,11 @@ shorewall_cli() {
 		    # It's a shell function -- call it
 		    #
 		    $@
+		elif type $1 2> /dev/null | fgrep -q 'is a shell function'; then
+		    #
+		    # It's a shell function -- call it
+		    #
+		    $@
 		else
 		    #
 		    # It isn't a function visible to this script -- try
diff --git a/Shorewall-core/lib.common b/Shorewall-core/lib.common
index 03ecb2a4a..3d0bacb1d 100644
--- a/Shorewall-core/lib.common
+++ b/Shorewall-core/lib.common
@@ -776,7 +776,7 @@ mutex_on()
 		error_message "WARNING: Stale lockfile ${lockf} removed"
 	    elif [ $lockpid -eq $$ ]; then
                 return 0
-	    elif ! qt ps p ${lockpid}; then
+	    elif ! qt ps | grep -v grep | grep ${lockpid}; then
 		rm -f ${lockf}
 		error_message "WARNING: Stale lockfile ${lockf} from pid ${lockpid} removed"
 	    fi
@@ -788,10 +788,9 @@ mutex_on()
 	    echo $$ > ${lockf}
 	    chmod u-w ${lockf}
 	elif qt mywhich lock; then
-            lock -${MUTEX_TIMEOUT} -r1 ${lockf}
-            chmod u+w ${lockf}
             echo $$ > ${lockf}
-            chmod u-w ${lockf}
+            chmod u=r ${lockf}
+            lock ${lockf}
 	else
 	    while [ -f ${lockf} -a ${try} -lt ${MUTEX_TIMEOUT} ] ; do
 		sleep 1
@@ -813,6 +812,7 @@ mutex_on()
 #
 mutex_off()
 {
+    [ -f ${CONFDIR}/rc.common ] && lock -u ${LOCKFILE:=${VARDIR}/lock}
     rm -f ${LOCKFILE:=${VARDIR}/lock}
 }
 
diff --git a/Shorewall-lite/install.sh b/Shorewall-lite/install.sh
index 439d4a9f0..c8bffe108 100755
--- a/Shorewall-lite/install.sh
+++ b/Shorewall-lite/install.sh
@@ -550,7 +550,7 @@ if [ -n "$SYSCONFFILE" -a -f "$SYSCONFFILE" -a ! -f ${DESTDIR}${SYSCONFDIR}/${PR
     fi
 
     install_file ${SYSCONFFILE} ${DESTDIR}${SYSCONFDIR}/${PRODUCT} 0640
-    echo "$SYSCONFFILE installed in ${DESTDIR}${SYSCONFDIR}/${PRODUCT}"
+    echo "$SYSCONFFILE file installed in ${DESTDIR}${SYSCONFDIR}/${PRODUCT}"
 fi
 
 if [ ${SHAREDIR} != /usr/share ]; then
diff --git a/Shorewall/install.sh b/Shorewall/install.sh
index bdd82715c..581ae5079 100755
--- a/Shorewall/install.sh
+++ b/Shorewall/install.sh
@@ -1215,7 +1215,7 @@ if [ -n "$SYSCONFFILE" -a -f "$SYSCONFFILE" -a ! -f ${DESTDIR}${SYSCONFDIR}/${PR
     fi
 
     run_install $OWNERSHIP -m 0644 ${SYSCONFFILE} ${DESTDIR}${SYSCONFDIR}/$PRODUCT
-    echo "$SYSCONFFILE installed in ${DESTDIR}${SYSCONFDIR}/${PRODUCT}"
+    echo "$SYSCONFFILE file installed in ${DESTDIR}${SYSCONFDIR}/${PRODUCT}"
 fi
 
 if [ $configure -eq 1 -a -z "$DESTDIR" -a -n "$first_install" -a -z "${cygwin}${mac}" ]; then