diff --git a/python_apps/media-monitor/install/media-monitor-initialize.py b/python_apps/media-monitor/install/media-monitor-initialize.py
index 017fdfe70..41a044a48 100644
--- a/python_apps/media-monitor/install/media-monitor-initialize.py
+++ b/python_apps/media-monitor/install/media-monitor-initialize.py
@@ -1,4 +1,4 @@
-from subprocess import Popen
+import subprocess
 import os
 
 if os.geteuid() != 0:
@@ -11,16 +11,11 @@ try:
         os.makedirs("/var/tmp/airtime/media-monitor")
 
     #update-rc.d init script
-    p = Popen("update-rc.d airtime-media-monitor defaults >/dev/null 2>&1", shell=True)
-    sts = os.waitpid(p.pid, 0)[1]
+    subprocess.call("update-rc.d airtime-media-monitor defaults >/dev/null 2>&1", shell=True)
 
     #Start media-monitor daemon
     print "* Waiting for media-monitor processes to start..."
-    """
-    p = Popen("invoke-rc.d airtime-media-monitor stop", shell=True)
-    sts = os.waitpid(p.pid, 0)[1]
-    """
-    p = Popen("invoke-rc.d airtime-media-monitor start-no-monit", shell=True)
-    sts = os.waitpid(p.pid, 0)[1]
+
+    subprocess.call("invoke-rc.d airtime-media-monitor start-no-monit", shell=True)
 except Exception, e:
     print e
diff --git a/python_apps/media-monitor/install/media-monitor-uninitialize.py b/python_apps/media-monitor/install/media-monitor-uninitialize.py
index a7cca67dc..84c8fb139 100644
--- a/python_apps/media-monitor/install/media-monitor-uninitialize.py
+++ b/python_apps/media-monitor/install/media-monitor-uninitialize.py
@@ -1,4 +1,4 @@
-from subprocess import Popen
+import subprocess
 import os
 import sys
 
@@ -9,8 +9,7 @@ if os.geteuid() != 0:
 try:
     print "Waiting for media-monitor processes to stop...",
     if (os.path.exists('/etc/init.d/airtime-media-monitor')):
-        p = Popen("invoke-rc.d airtime-media-monitor stop", shell=True)
-        sts = os.waitpid(p.pid, 0)[1]
+        subprocess.call("invoke-rc.d airtime-media-monitor stop", shell=True)
         print "OK"
     else:
         print "Wasn't running"
diff --git a/python_apps/pypo/install/pypo-initialize.py b/python_apps/pypo/install/pypo-initialize.py
index daccc8d9c..f5098d77e 100644
--- a/python_apps/pypo/install/pypo-initialize.py
+++ b/python_apps/pypo/install/pypo-initialize.py
@@ -1,6 +1,7 @@
 import platform
 import shutil
 from subprocess import Popen, PIPE
+import subprocess
 import sys
 import os
 sys.path.append('/usr/lib/airtime/')
@@ -115,17 +116,14 @@ try:
         print "Unable to connect to the Airtime server."
 
     #initialize init.d scripts
-    p = Popen("update-rc.d airtime-playout defaults >/dev/null 2>&1", shell=True)
-    sts = os.waitpid(p.pid, 0)[1]
+    subprocess.call("update-rc.d airtime-playout defaults >/dev/null 2>&1", shell=True)
 
     #clear out an previous pypo cache
     print "* Clearing previous pypo cache"  
-    p = Popen("rm -rf '/var/tmp/airtime/pypo/cache/scheduler/*' >/dev/null 2>&1", shell=True)
-    sts = os.waitpid(p.pid, 0)[1]
-
+    subprocess.call("rm -rf '/var/tmp/airtime/pypo/cache/scheduler/*' >/dev/null 2>&1", shell=True)
+    
     print "* Waiting for pypo processes to start..."    
-    p = Popen("invoke-rc.d airtime-playout start-no-monit  > /dev/null 2>&1", shell=True)
-    sts = os.waitpid(p.pid, 0)[1]
+    subprocess.call("invoke-rc.d airtime-playout start-no-monit  > /dev/null 2>&1", shell=True)
     
 except Exception, e:
     print e
diff --git a/python_apps/pypo/install/pypo-uninitialize.py b/python_apps/pypo/install/pypo-uninitialize.py
index 2329e88e7..19d27768d 100644
--- a/python_apps/pypo/install/pypo-uninitialize.py
+++ b/python_apps/pypo/install/pypo-uninitialize.py
@@ -1,6 +1,6 @@
-from subprocess import Popen
 import os
 import sys
+import subprocess
 
 if os.geteuid() != 0:
     print "Please run this as root."
@@ -10,8 +10,7 @@ try:
     #stop pypo and liquidsoap processes
     print "Waiting for pypo processes to stop...",
     if (os.path.exists('/etc/init.d/airtime-playout')):
-        p = Popen("invoke-rc.d airtime-playout stop", shell=True)
-        sts = os.waitpid(p.pid, 0)[1]
+        subprocess.call("invoke-rc.d airtime-playout stop", shell=True)
         print "OK"
     else:
         print "Wasn't running"