diff --git a/JiraTimeBotForm/Program.cs b/JiraTimeBotForm/Program.cs
index 2c15114..d0c24d7 100644
--- a/JiraTimeBotForm/Program.cs
+++ b/JiraTimeBotForm/Program.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Diagnostics;
 using System.Windows.Forms;
 
 namespace JiraTimeBotForm
@@ -11,9 +12,33 @@ namespace JiraTimeBotForm
         [STAThread]
         static void Main()
         {
+            if (PriorProcess() != null)
+            {
+
+                MessageBox.Show("Another instance of the app is already running.");
+                return;
+            }
+            
             Application.EnableVisualStyles();
             Application.SetCompatibleTextRenderingDefault(false);
             Application.Run(new frmMain());
         }
+
+        public static Process PriorProcess()
+            // Returns a System.Diagnostics.Process pointing to
+            // a pre-existing process with the same name as the
+            // current one, if any; or null if the current process
+            // is unique.
+        {
+            Process curr = Process.GetCurrentProcess();
+            Process[] procs = Process.GetProcessesByName(curr.ProcessName);
+            foreach (Process p in procs)
+            {
+                if ((p.Id != curr.Id) &&
+                    (p.MainModule.FileName == curr.MainModule.FileName))
+                    return p;
+            }
+            return null;
+        }
     }
 }
diff --git a/JiraTimeBotForm/TaskTime/TaskTimeDiscoverer.cs b/JiraTimeBotForm/TaskTime/TaskTimeDiscoverer.cs
index 22addb0..5333f07 100644
--- a/JiraTimeBotForm/TaskTime/TaskTimeDiscoverer.cs
+++ b/JiraTimeBotForm/TaskTime/TaskTimeDiscoverer.cs
@@ -34,13 +34,18 @@ namespace JiraTimeBotForm.TaskTime
                 }
 
                 var repo = new Repository(repoDirectory);
-                var log = repo.Log(new LogCommand {Date = date, Users = { settings.MercurialAuthorEmail }});
+                var log = repo.Log(new LogCommand {Date = date, Users = { settings.MercurialAuthorEmail } });
                 foreach (var changeset in log)
                 {
                     if (!changeset.Branch.Contains("-"))
                     {
                         continue;
                     }
+                    //Пропускаем Close коммиты
+                    if (changeset.CommitMessage.StartsWith($"Close {changeset.Branch} branch"))
+                    {
+                        continue;
+                    }
 
                     workTasks.Add(changeset.Branch);
                     _log.Trace($" - Найден changeset: {changeset.Timestamp} - {changeset.Branch} - {changeset.AuthorEmailAddress}");
diff --git a/JiraTimeBotForm/frmMain.Designer.cs b/JiraTimeBotForm/frmMain.Designer.cs
index c6fb20c..a574d4b 100644
--- a/JiraTimeBotForm/frmMain.Designer.cs
+++ b/JiraTimeBotForm/frmMain.Designer.cs
@@ -145,6 +145,7 @@ namespace JiraTimeBotForm
             this.txtLog.Location = new System.Drawing.Point(218, 16);
             this.txtLog.Multiline = true;
             this.txtLog.Name = "txtLog";
+            this.txtLog.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
             this.txtLog.Size = new System.Drawing.Size(510, 264);
             this.txtLog.TabIndex = 11;
             //