Only call apply_prefs() if OK is pressed in the Preferences dialog.

src/dialogs.py

@@ -131,6 +131,8 @@ class PreferencesDlg:
 			self.preferences.set("enable_dht", self.glade.get_widget("chk_dht").get_active())
 			self.preferences.set("gui_update_interval", self.glade.get_widget("spin_gui").get_value())
 
+		return r
+			
 	def TestPort(self, widget):
 		activep = str(self.parent.manager.get_state()['port'])
 		common.open_url_in_browser(self.dialog,'http://www.deluge-torrent.org/test-port.php?port=%s' %activep)

src/interface.py

@@ -674,17 +674,19 @@ class DelugeGTK:
 	
 	def show_pref_dialog(self, arg=None):
 		if self.window.get_property("visible"):
-			self.preferences_dialog.show()
-			self.apply_prefs()
-			self.config.save()
+			# Only apply the prefs if the user pressed OK in the prefs dialog
+			if self.preferences_dialog.show() == 1:
+				self.apply_prefs()
+				self.config.save()
 
 		else:
 			if self.config.get("lock_tray") == True:
 				self.unlock_tray("prefwinshow")
 			else:
-				self.preferences_dialog.show()
-				self.apply_prefs()
-				self.config.save()
+				# Only apply the prefs if the user pressed OK in the prefs dialog
+				if self.preferences_dialog.show() == 1:
+					self.apply_prefs()
+					self.config.save()
 	
 	def show_plugin_dialog(self, arg=None):
 		self.plugin_dialog.show()