diff --git a/ide/sourceeditor.pp b/ide/sourceeditor.pp
index 303f09e083..1bd2aa82ab 100644
--- a/ide/sourceeditor.pp
+++ b/ide/sourceeditor.pp
@@ -3064,6 +3064,7 @@ begin
   // HintTimer
   FHintTimer := TTimer.Create(Self);
   with FHintTimer do begin
+    Name:=Self.Name+'_HintTimer';
     Interval := 1000;
     Enabled := False;
     OnTimer := @HintTimer;
@@ -3072,6 +3073,7 @@ begin
   // HintWindow
   FHintWindow := THintWindow.Create(Self);
   with FHintWindow do begin
+    Name:=Self.Name+'_HintWindow';
     Visible := False;
     Caption := '';
     HideInterval := 4000;
@@ -5133,6 +5135,7 @@ end;
 
 procedure TSourceNotebook.HideHint;
 begin
+  //DebugLn(['TSourceNotebook.HideHint ']);
   if FHintTimer<>nil then
     FHintTimer.Enabled:=false;
   if SourceCompletionTimer<>nil then
@@ -6233,6 +6236,7 @@ Procedure TSourceNotebook.EditorMouseMove(Sender: TObject; Shift: TShiftstate;
   X,Y: Integer);
 begin
   // restart hint timer
+  //DebugLn(['TSourceNotebook.EditorMouseMove ']);
   FHintTimer.Enabled := False;
   FHintTimer.Enabled := (EditorOpts.AutoToolTipSymbTools or
                          EditorOpts.AutoToolTipExprEval)
@@ -6243,8 +6247,8 @@ procedure TSourceNotebook.EditorMouseWheel(Sender: TObject; Shift: TShiftState;
   WheelDelta: Integer; MousePos: TPoint; var Handled: Boolean);
 begin
   // restart hint timer
+  //DebugLn(['TSourceNotebook.EditorMouseWheel ']);
   HideHint;
-  FHintTimer.Enabled := False;
   FHintTimer.Enabled := (EditorOpts.AutoToolTipSymbTools or
                          EditorOpts.AutoToolTipExprEval) and Visible;
   //handled:=true; //The scrooling is not done: it's not handled! See TWinControl.DoMouseWheel
@@ -6261,6 +6265,7 @@ var
   MousePos: TPoint;
   AControl: TControl;
 begin
+  //DebugLn(['TSourceNotebook.HintTimer ']);
   FHintTimer.Enabled := False;
   MousePos := Mouse.CursorPos;
   AControl:=FindLCLControl(MousePos);
diff --git a/lcl/customtimer.pas b/lcl/customtimer.pas
index 709b7248d0..d9085dce53 100644
--- a/lcl/customtimer.pas
+++ b/lcl/customtimer.pas
@@ -26,7 +26,7 @@ unit CustomTimer;
 interface
 
 uses
-  Classes, SysUtils, LCLStrConsts, LCLType, InterfaceBase;
+  Classes, SysUtils, LCLProc, LCLStrConsts, LCLType, InterfaceBase;
 
 type
 
@@ -106,6 +106,7 @@ end;
 procedure TCustomTimer.KillTimer;
 begin
   if FTimerHandle <> cIdNoTimer then begin
+    //DebugLn(['TCustomTimer.KillTimer ',dbgsName(Self)]);
     WidgetSet.DestroyTimer(FTimerHandle);
     FTimerHandle := cIdNoTimer;
     if Assigned(OnStopTimer) then OnStopTimer(Self);
@@ -129,8 +130,9 @@ procedure TCustomTimer.UpdateTimer;
 begin
   KillTimer;
   if (FEnabled) and (FInterval > 0)
-  and (([csDesigning,csLoading]*ComponentState=[]))
+  and (([csDesigning,csLoading,csDestroying]*ComponentState=[]))
   and Assigned (FOnTimer) then begin
+    //DebugLn(['TCustomTimer.UpdateTimer ',dbgsName(Self),' WidgetSet.CreateTimer']);
     FTimerHandle := WidgetSet.CreateTimer(FInterval, @Timer);
     if FTimerHandle=0 then begin
       FTimerHandle:=cIdNoTimer;
@@ -148,6 +150,9 @@ end;
  ------------------------------------------------------------------------------}
 procedure TCustomTimer.Timer;
 begin
+  {$IFDEF VerboseTimer}
+  DebugLn(['TCustomTimer.Timer ',dbgsName(Self),' ',FEnabled,' ',FInterval]);
+  {$ENDIF}
   if (FEnabled) and (FInterval > 0) then
     DoOnTimer;
 end;
diff --git a/lcl/interfaces/gtk/gtkcallback.inc b/lcl/interfaces/gtk/gtkcallback.inc
index fcc15d31a3..baccab190c 100644
--- a/lcl/interfaces/gtk/gtkcallback.inc
+++ b/lcl/interfaces/gtk/gtkcallback.inc
@@ -1091,6 +1091,7 @@ begin
   // (Posting the message via queue
   //  has the risk of getting out of sync with the gtk)
   NotifyApplicationUserInput(Msg.Msg);
+  //DebugLn(['DeliverMouseMoveMessage ',dbgsName(AWinControl)]);
   DeliverMessage(AWinControl, Msg);
 end;
 
@@ -2152,6 +2153,7 @@ begin
     if TimerInfo^.TimerFunc <> nil
     then begin
       // Call users timer function
+      //DebugLn(['gtkTimerCB ']);
       TimerInfo^.TimerFunc;
       Result:=GdkTrue; // timer will go on
     end
diff --git a/lcl/interfaces/gtk/gtkwidgetset.inc b/lcl/interfaces/gtk/gtkwidgetset.inc
index c3cdb42a8f..ea733bba1a 100644
--- a/lcl/interfaces/gtk/gtkwidgetset.inc
+++ b/lcl/interfaces/gtk/gtkwidgetset.inc
@@ -1416,9 +1416,10 @@ begin
     Result := 0
   else begin
     New(TimerInfo);
+    FillByte(TimerInfo^,SizeOf(TGtkITimerinfo),0);
     TimerInfo^.TimerFunc := TimerFunc;
     {$IFDEF VerboseTimer}
-    DebugLn('TGtkWidgetSet.SetTimer %p CurTimerCount=%d OldTimerCount=%d', [TimerInfo, FTimerData.Count, FOldTimerData.Count]);
+    DebugLn(['TGtkWidgetSet.CreateTimer Interval=',dbgs(Interval)]);
     {$ENDIF}
     Result:= gtk_timeout_add(Interval, @gtkTimerCB, TimerInfo);
     if Result = 0 then
@@ -1452,7 +1453,7 @@ begin
     if (TimerInfo^.TimerHandle=guint(TimerHandle)) then
     begin
       {$IFDEF VerboseTimer}
-      DebugLn('TGtkWidgetSet.KillTimer TimerInfo=',DbgS(TimerInfo),' TimerHandle=',TimerHandle,' CurTimerCount=',FTimerData.Count,' OldTimerCount=',FOldTimerData.Count);
+      DebugLn(['TGtkWidgetSet.DestroyTimer TimerInfo=',DbgS(TimerInfo),' TimerHandle=',TimerInfo^.TimerHandle]);
       {$ENDIF}
       gtk_timeout_remove(TimerInfo^.TimerHandle);
       FTimerData.Delete(n);