diff --git a/lib/acpi.c b/lib/acpi.c
index 2bb50eb..9ea746c 100644
--- a/lib/acpi.c
+++ b/lib/acpi.c
@@ -631,6 +631,7 @@ get_acpi_info (void)
     TRACE ("leaves get_acpi_info");
 
     version = get_acpi_value (filename);
+    g_free (filename);
     if (version!=NULL)
         version = g_strchomp (version);
 
@@ -654,6 +655,7 @@ get_acpi_zone_value (char *zone, char *file)
 
     filename = g_strdup_printf ("%s/%s/%s", ACPI_PATH, zone, file);
     value = get_acpi_value (filename);
+    g_free(filename);
 
     TRACE ("leaves get_acpi_zone_value with correctly converted value");
 
diff --git a/lib/hddtemp.c b/lib/hddtemp.c
index 5089f34..7d0277b 100644
--- a/lib/hddtemp.c
+++ b/lib/hddtemp.c
@@ -194,7 +194,7 @@ void quick_message (gchar *message)
 void
 read_disks_netcat (t_chip *chip)
 {
-    char *stdoutput, *stderrput, *cmdline, *tmp, *tmp2, *tmp3;
+    gchar *stdoutput = NULL, *stderrput = NULL, *cmdline, *tmp, *tmp2, *tmp3;
     gboolean result;
     gint exit_status = 0;
     GError *error = NULL;
@@ -207,9 +207,15 @@ read_disks_netcat (t_chip *chip)
     result = g_spawn_command_line_sync ( (const gchar*) cmdline,
                 &stdoutput, &stderrput, &exit_status, &error);
 
-    if (!result)
+    g_free (cmdline);
+    
+    if (!result) {
+        g_error_free(error);
         return;
+    }
 
+    g_free (stderrput);
+    
     //g_printf("stdouput=%s\n", stdoutput);
 
     tmp = str_split (stdoutput, DOUBLE_DELIMITER);
@@ -487,7 +493,7 @@ get_hddtemp_value (char* disk, gboolean *suppressmessage)
                 tmp3 = strdup(strtok(NULL, SINGLE_DELIMITER)); // value
                 // tmp3 = strtok(NULL, SINGLE_DELIMITER); // temperature unit
                 exit_status = 0;
-                g_free(error);
+                g_error_free(error);
                 error = NULL;
                 g_free (tmp2);
                 break;
@@ -604,6 +610,8 @@ get_hddtemp_value (char* disk, gboolean *suppressmessage)
     g_free (checktext);
 #endif
 
+    if (error) g_error_free(error);
+    
     TRACE ("leaves get_hddtemp_value");
 
     return value;
diff --git a/panel-plugin/sensors-plugin.c b/panel-plugin/sensors-plugin.c
index fccefed..519d0f4 100644
--- a/panel-plugin/sensors-plugin.c
+++ b/panel-plugin/sensors-plugin.c
@@ -627,7 +627,9 @@ sensors_set_text_panel_label (t_sensors *sensors, gint numCols, gint itemsToDisp
             
             if (chipfeature->show == TRUE) {
                 if(sensors->show_labels==TRUE) {
-                  myLabelText = g_strconcat (myLabelText, "<span size=\"", sensors->font_size, "\">",chipfeature->name, ":</span> ", NULL);
+                  tmpstring = g_strconcat (myLabelText, "<span size=\"", sensors->font_size, "\">",chipfeature->name, ":</span> ", NULL);
+                  g_free(myLabelText);
+                  myLabelText = tmpstring;
                 }
                 
                 if (sensors->show_units) {
@@ -650,18 +652,29 @@ sensors_set_text_panel_label (t_sensors *sensors, gint numCols, gint itemsToDisp
                 myLabelText = tmpstring;
 
                 if (sensors->orientation == GTK_ORIENTATION_VERTICAL) {
-                    if (itemsToDisplay > 1)
-                        myLabelText = g_strconcat (myLabelText, "\n", NULL);
+                    if (itemsToDisplay > 1) {
+                        tmpstring = g_strconcat (myLabelText, "\n", NULL);
+                        g_free(myLabelText);
+                        myLabelText = tmpstring;
+                    }
                 }
                 else if (currentColumn < numCols-1) {
-                    if (sensors->show_smallspacings)
-                        myLabelText = g_strconcat (myLabelText, "  ", NULL);
-                    else
-                        myLabelText = g_strconcat (myLabelText, " \t", NULL);
+                    if (sensors->show_smallspacings) {
+                        tmpstring = g_strconcat (myLabelText, "  ", NULL);
+                        g_free(myLabelText);
+                        myLabelText = tmpstring;
+                    }
+                    else {
+                        tmpstring = g_strconcat (myLabelText, " \t", NULL);
+                        g_free(myLabelText);
+                        myLabelText = tmpstring;
+                    }
                     currentColumn++;
                 }
                 else if (itemsToDisplay > 1) { /* do NOT add \n if last item */
-                    myLabelText = g_strconcat (myLabelText, " \n", NULL);
+                    tmpstring = g_strconcat (myLabelText, " \n", NULL);
+                    g_free(myLabelText);
+                    myLabelText = tmpstring;
                     currentColumn = 0;
                 }
                 itemsToDisplay--;
@@ -790,6 +803,7 @@ sensors_create_tooltip (gpointer data)
                 if (prependedChipName != TRUE) {
 
                     if (first == TRUE) {
+                        g_free (myToolTipText);
                         myToolTipText = g_strdup (chip->sensorId);
                         first = FALSE;
                     }