OutlookItemEvents ProcessRead not always called ?

 .... 
        private void ConnectToSelectedItem(Outlook.Selection selection)
        {
            DebugWriteLine("Inside : ConnectToSelectedItem");
            if (selection != null)
            {
                if (selection.Count == 1)
                {
                    try
                    {
                        // If its anything other that Mail. We don't support at this point.
                        if (selection[1] is Outlook.MailItem)
                        {
                            Outlook.MailItem item = (Outlook.MailItem)selection[1];

                            if (replyAllChecker.IsConnected)
                            {
                                replyAllChecker.RemoveConnection();
                                DebugWriteLine("Disconnected from the previously connected item.");
                            }
                            replyAllChecker.ConnectTo(item, true);
                            DebugWriteLine("Connected to this Outlook item.");
                        }
                        else
                        {
                            // If its anything other that Mail. We don't support at this point.
                            DebugWriteLine("Do not connect to this Outlook item.");
                        }
                    }
                    catch (Exception e) {
                        DebugWriteLine("CCCC");
                        DebugWriteLine(e.ToString());
                    }

                }
            }
        }

        private void adxOutlookAppEvents_ExplorerActivate(object sender, object explorer)
        {
            DebugWriteLine("The ExplorerActivate event has occurred.");
            Outlook.Explorer theExplorer = explorer as Outlook.Explorer;
            if (theExplorer != null)
            {
                Outlook.Selection selection = null;
                try
                {
                    if (theExplorer.Selection != null)
                    {
                        selection = theExplorer.Selection;

                        if (selection != null)
                        {
                            DebugWriteLine("Trying ConnectToSelectedItem.");
                            ConnectToSelectedItem(selection);
                            //if (selection != null) Marshal.ReleaseComObject(selection);
                        }
                    }
                }
                catch(Exception e) {
                    DebugWriteLine("FFFF");
                    if (selection != null) Marshal.ReleaseComObject(selection);
                    //if (theExplorer != null) Marshal.ReleaseComObject(theExplorer);
                }

            }
        }

        adxOutlookAppEvents_ExplorerSelectionChange(object sender, object explorer)
        {
            DebugWriteLine("The ExplorerSelectionChange event has occurred.");
            try
            {
                Outlook.Explorer theExplorer = explorer as Outlook.Explorer;
                if (theExplorer != null)
                {
                    Outlook.Selection selection = null;
                    try
                    {
                        selection = theExplorer.Selection;

                        if (selection != null)
                        {
                            DebugWriteLine("Trying ConnectToSelectedItem.");
                            ConnectToSelectedItem(selection);
                            if (selection != null) Marshal.ReleaseComObject(selection);
                        }
                    }
                    catch {
                        DebugWriteLine("EEEEE");
                    }
                }
            }
            catch
            {
                DebugWriteLine("COM Object Already Released ");
            }

        }

        private void AddinModule_AddinStartupComplete(object sender, EventArgs e)
        {
            DebugWriteLine("The AddinStartupComplete event has occurred.");
            DebugWriteLine("The add-in has been loaded in Outlook " + this.HostMajorVersion.ToString());

            // This creates an instance of the class that handles the events of an Outlook item
            replyAllChecker = new OutlookItemEventsClass1(this);
        }