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diff --git a/android/app/.cxx/RelWithDebInfo/6l395w5m/x86_64/configure_fingerprint.bin b/android/app/.cxx/RelWithDebInfo/6l395w5m/x86_64/configure_fingerprint.bin
deleted file mode 100644
index 7fd83d6..0000000
--- a/android/app/.cxx/RelWithDebInfo/6l395w5m/x86_64/configure_fingerprint.bin
+++ /dev/null
@@ -1,28 +0,0 @@
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diff --git a/lib/content_views/approach_area_page.dart b/lib/content_views/approach_area_page.dart
index a6057c6..4d77dae 100644
--- a/lib/content_views/approach_area_page.dart
+++ b/lib/content_views/approach_area_page.dart
@@ -42,12 +42,22 @@ class _ApproachAreaPageState extends State<ApproachAreaPage> with ProducerMixin,
 
       _initCompleted = true;
 
-      setState(() {});
+      if (mounted) {
+        setState(() {});
+      }
     });
 
     _initMessages();
   }
 
+  @override
+  void dispose() {
+    // Unsubscribe from all message topics
+    unsubscribe(queueId: Constants.messageTopicRankingUpdated);
+
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     if (!_initCompleted) {
@@ -204,7 +214,9 @@ class _ApproachAreaPageState extends State<ApproachAreaPage> with ProducerMixin,
       callback: (message) async {
         _ranking = await MyApp.isarInstance.rankings.where().findFirst();
 
-        setState(() {});
+        if (mounted) {
+          setState(() {});
+        }
       },
     );
   }
diff --git a/lib/content_views/assigned_jobs_page.dart b/lib/content_views/assigned_jobs_page.dart
index a62a8b4..4cfd520 100644
--- a/lib/content_views/assigned_jobs_page.dart
+++ b/lib/content_views/assigned_jobs_page.dart
@@ -54,6 +54,14 @@ class _AssignedJobsPageState extends State<AssignedJobsPage> with ProducerMixin,
     super.initState();
   }
 
+  @override
+  void dispose() {
+    // Unsubscribe from all message topics
+    unsubscribe(queueId: Constants.messageTopicJobReceived);
+
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     if (!_initCompleted) {
@@ -254,7 +262,9 @@ class _AssignedJobsPageState extends State<AssignedJobsPage> with ProducerMixin,
         if (job.state == Constants.stateAssigned) {
           _jobs.add(job);
 
-          setState(() {});
+          if (mounted) {
+            setState(() {});
+          }
         }
 
       },
diff --git a/lib/content_views/main_page.dart b/lib/content_views/main_page.dart
index b536f50..168796f 100644
--- a/lib/content_views/main_page.dart
+++ b/lib/content_views/main_page.dart
@@ -58,6 +58,14 @@ class _MainPageState extends State<MainPage> with ConsumerMixin, ProducerMixin {
 
   @override
   void dispose() {
+    // Unsubscribe from all message topics
+    unsubscribe(queueId: Constants.messageTopicRemoveJob);
+    unsubscribe(queueId: Constants.messageTopicJobReceived);
+    unsubscribe(queueId: Constants.messageTopicMessageReceived);
+    unsubscribe(queueId: Constants.messageTopicJobDeleted);
+    unsubscribe(queueId: Constants.messageTopicUpdateBadges);
+    unsubscribe(queueId: Constants.messageTopicBWVEnabled);
+
     super.dispose();
   }
 
@@ -304,10 +312,12 @@ class _MainPageState extends State<MainPage> with ConsumerMixin, ProducerMixin {
     subscribe(
         queueId: Constants.messageTopicBWVEnabled,
         callback: (message) {
-          setState(() {
-            _showBWVButton =
-                Util.preferencesGetBool(Constants.prefsBWVEnabled, false);
-          });
+          if (mounted) {
+            setState(() {
+              _showBWVButton =
+                  Util.preferencesGetBool(Constants.prefsBWVEnabled, false);
+            });
+          }
         });
   }
 
@@ -337,7 +347,9 @@ class _MainPageState extends State<MainPage> with ConsumerMixin, ProducerMixin {
 
       _loggedOut = false;
 
-      setState(() {});
+      if (mounted) {
+        setState(() {});
+      }
     }
   }
 
@@ -368,7 +380,9 @@ class _MainPageState extends State<MainPage> with ConsumerMixin, ProducerMixin {
 
             Navigator.of(MyApp.appNavigatorKey.currentContext!).pop();
 
-            setState(() {});
+            if (mounted) {
+              setState(() {});
+            }
           });
         });
       },
@@ -441,6 +455,15 @@ class _HeaderWidgetState extends State<_HeaderWidget> with ConsumerMixin {
     _initMessages();
   }
 
+  @override
+  void dispose() {
+    // Unsubscribe from all message topics
+    unsubscribe(queueId: Constants.messageTopicSessionStatusInfoUpdate);
+    unsubscribe(queueId: Constants.messageTopicLocationStatusUpdated);
+
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     var cellWidth = (MediaQuery.of(context).size.width - 60 - 60 - 25) / 2;
diff --git a/lib/content_views/messages_page.dart b/lib/content_views/messages_page.dart
index 6e95173..4434738 100644
--- a/lib/content_views/messages_page.dart
+++ b/lib/content_views/messages_page.dart
@@ -58,7 +58,9 @@ class _MessagesPageState extends State<MessagesPage> with ProducerMixin {
 
       _initCompleted = true;
 
-      setState(() {});
+      if (mounted) {
+        setState(() {});
+      }
     });
   }
 
diff --git a/lib/content_views/task_list_page.dart b/lib/content_views/task_list_page.dart
index 61aa8b5..a23c2b0 100644
--- a/lib/content_views/task_list_page.dart
+++ b/lib/content_views/task_list_page.dart
@@ -64,7 +64,9 @@ class _TaskListPageState extends State<TaskListPage> with ProducerMixin {
 
       _initCompleted = true;
 
-      setState(() {});
+      if (mounted) {
+        setState(() {});
+      }
     });
 
     super.initState();
@@ -468,6 +470,7 @@ class _TaskListPageState extends State<TaskListPage> with ProducerMixin {
     var position = await MyApp.getCurrentPosition();
     if (position != null) {
       message.task.pos = FinTaskPos();
+      message.task.pos!.time = DateTime.now().toIso8601String();
       message.task.pos!.lat = position.latitude;
       message.task.pos!.long = position.longitude;
     } else {
diff --git a/lib/main.dart b/lib/main.dart
index b345070..75aa08d 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -224,6 +224,16 @@ class _MainState extends State<Main> with SingleTickerProviderStateMixin, Produc
   void dispose() {
     _animationController?.dispose();
 
+    // Unsubscribe from all message topics
+    unsubscribe(queueId: Constants.messageTopicPushContentView);
+    unsubscribe(queueId: Constants.messageTopicPopContentView);
+    unsubscribe(queueId: Constants.messageTopicReplaceContentView);
+    unsubscribe(queueId: Constants.messageTopicConnectionStatusChanged);
+    unsubscribe(queueId: Constants.messageTopicRemoveJob);
+    unsubscribe(queueId: Constants.messageTopicJobReceived);
+    unsubscribe(queueId: Constants.messageTopicJobDeleted);
+    unsubscribe(queueId: Constants.messageTopicRemoveState0JobFromMap);
+
     super.dispose();
   }
 
@@ -249,7 +259,9 @@ class _MainState extends State<Main> with SingleTickerProviderStateMixin, Produc
 
       _initCompleted = true;
 
-      setState(() {});
+      if (mounted) {
+        setState(() {});
+      }
     });
   }
 
@@ -451,7 +463,9 @@ class _MainState extends State<Main> with SingleTickerProviderStateMixin, Produc
 
       _currentTitleWidget = await _currentContent.getHeaderWidget(context);
 
-      setState(() {});
+      if (mounted) {
+        setState(() {});
+      }
     });
   }
 
diff --git a/lib/network_messages/fin_task_message.dart b/lib/network_messages/fin_task_message.dart
index d74378b..f960a6c 100644
--- a/lib/network_messages/fin_task_message.dart
+++ b/lib/network_messages/fin_task_message.dart
@@ -47,6 +47,8 @@ class Task {
 @embedded
 @JsonSerializable()
 class FinTaskPos {
+  late String time;
+
   late double lat;
 
   late double long;
diff --git a/lib/network_messages/sync_jobs_message.dart b/lib/network_messages/sync_jobs_message.dart
index d87145b..1ac9caf 100644
--- a/lib/network_messages/sync_jobs_message.dart
+++ b/lib/network_messages/sync_jobs_message.dart
@@ -46,6 +46,8 @@ class SyncJobMessageJob {
 
 @JsonSerializable()
 class SyncMessagePos {
+  late String time;
+
   late double lat;
 
   late double long;
diff --git a/lib/popups/accept_jobs_popup.dart b/lib/popups/accept_jobs_popup.dart
index 048f95c..4aa3d2b 100644
--- a/lib/popups/accept_jobs_popup.dart
+++ b/lib/popups/accept_jobs_popup.dart
@@ -198,7 +198,9 @@ Future<List<Widget>> _fetchJobWidgets(StateSetter dialogState, Function() onFini
                           payload: RemoveJobMessage(id: job.id),
                         );
 
-                        setState(() {});
+                        if (mounted) {
+                          setState(() {});
+                        }
                       });
                     }),
                   ),
@@ -215,7 +217,9 @@ Future<List<Widget>> _fetchJobWidgets(StateSetter dialogState, Function() onFini
                           payload: RemoveJobMessage(id: job.id),
                         );
 
-                        setState(() {});
+                        if (mounted) {
+                          setState(() {});
+                        }
                       });
                     }),
                   )
diff --git a/lib/tools/mqtt_core.dart b/lib/tools/mqtt_core.dart
index dc9db78..53b87f1 100644
--- a/lib/tools/mqtt_core.dart
+++ b/lib/tools/mqtt_core.dart
@@ -590,6 +590,7 @@ class MqttCore with ProducerMixin, ConsumerMixin {
     answer.utcUnixTime = DateTime.now().toUtc().millisecondsSinceEpoch ~/ 1000;
 
     answer.pos = SyncMessagePos();
+    answer.pos!.time = DateTime.now().toUtc().toIso8601String();
     answer.pos!.lat = currentPosition != null ? currentPosition.latitude : 0.0;
     answer.pos!.long = currentPosition != null ? currentPosition.longitude : 0.0;
     answer.pos!.acc = currentPosition != null ? currentPosition.accuracy.toInt() : 0;