diff --git a/code/nel/include/nel/net/module_builder_parts.h b/code/nel/include/nel/net/module_builder_parts.h
index 22b863abb..b080e521f 100644
--- a/code/nel/include/nel/net/module_builder_parts.h
+++ b/code/nel/include/nel/net/module_builder_parts.h
@@ -127,6 +127,8 @@ namespace NLNET
 	class IModuleTrackerCb
 	{
 	public:
+		virtual ~IModuleTrackerCb() { }
+
 		virtual void onTrackedModuleUp(IModuleProxy *moduleProxy) =0;
 		virtual void onTrackedModuleDown(IModuleProxy *moduleProxy) =0;
 	};
diff --git a/code/ryzom/client/src/client_cfg.h b/code/ryzom/client/src/client_cfg.h
index 048869cf6..44a195d05 100644
--- a/code/ryzom/client/src/client_cfg.h
+++ b/code/ryzom/client/src/client_cfg.h
@@ -801,6 +801,7 @@ struct CClientConfig
 public:
 	/// Constructor.
 	CClientConfig();
+	virtual ~CClientConfig() {}
 
 	static void setValues ();				// Set the values of the ClientCfg instance
 	static void setValuesOnFileChange ();	// called when cfg modified
diff --git a/code/ryzom/client/src/interface_v3/group_map.h b/code/ryzom/client/src/interface_v3/group_map.h
index 9f88b2893..09974152d 100644
--- a/code/ryzom/client/src/interface_v3/group_map.h
+++ b/code/ryzom/client/src/interface_v3/group_map.h
@@ -107,7 +107,7 @@ public:
 	};
 public:
 	CGroupMap(const TCtorParam &param);
-	~CGroupMap();
+	virtual ~CGroupMap();
 	// Add a decoration to the map. The map will call the 'onAdd' method. When this object is destroyed, it will call the 'onRemove' method
 	void addDeco(IDeco *deco);
 	// Remove a decoration from the map. This will also call the 'onRemove' method. It is up to the owner to delete it.
diff --git a/code/ryzom/client/src/interface_v3/view_pointer.cpp b/code/ryzom/client/src/interface_v3/view_pointer.cpp
index 2f70d382b..e6e6dcaa2 100644
--- a/code/ryzom/client/src/interface_v3/view_pointer.cpp
+++ b/code/ryzom/client/src/interface_v3/view_pointer.cpp
@@ -48,7 +48,7 @@ CViewPointer::CViewPointer (const TCtorParam &param)
 	: CViewBase(param),
 	_Buttons(NLMISC::noButton)
 {
-	_PointerX = _PointerY = _PointerOldX = _PointerOldY = 0;
+	_PointerX = _PointerY = _PointerOldX = _PointerOldY = _PointerDownX = _PointerDownY = 0;
 	_PointerDown = false;
 	_PointerVisible = true;
 	_TxIdDefault = -2;
diff --git a/code/ryzom/client/src/r2/dmc/client_edition_module.cpp b/code/ryzom/client/src/r2/dmc/client_edition_module.cpp
index fc8ec2b51..4d10f45a4 100644
--- a/code/ryzom/client/src/r2/dmc/client_edition_module.cpp
+++ b/code/ryzom/client/src/r2/dmc/client_edition_module.cpp
@@ -1381,7 +1381,7 @@ bool CClientEditionModule::loadUserComponent(const std::string& filename, bool m
 	}
 
 	CHashKeyMD5 md5Id;
-	uint32 timeStamp;
+	uint32 timeStamp = 0;
 	if (! compressed)
 	{
 
@@ -1572,6 +1572,9 @@ bool CClientEditionModule::loadUserComponent(const std::string& filename, bool m
 
 		uncompressedFile[uncompressedFileLength] = '\0';
 	}
+
+	// TODO: compute md5Id and timeStamp
+
 	_UserComponents[filename] = new CUserComponent(filename, uncompressedFile, uncompressedFileLength, compressedFile, compressedFileLength);
 	_UserComponents[filename]->Md5Id = md5Id;
 	_UserComponents[filename]->TimeStamp = timeStamp;
diff --git a/code/ryzom/client/src/r2/dmc/dmc.cpp b/code/ryzom/client/src/r2/dmc/dmc.cpp
index df18c12f8..5ea173477 100644
--- a/code/ryzom/client/src/r2/dmc/dmc.cpp
+++ b/code/ryzom/client/src/r2/dmc/dmc.cpp
@@ -556,6 +556,10 @@ void CDynamicMapClient::requestSetNode(const std::string& instanceId, const std:
 class CNotifySonDeletion : public CEditor::IObserverAction
 {
 public:
+	virtual ~CNotifySonDeletion()
+	{
+	}
+
 	CInstance &ErasedInstance;
 	CNotifySonDeletion(CInstance &erasedInstance) : ErasedInstance(erasedInstance) {}
 	virtual void doAction(CEditor::IInstanceObserver &obs)
@@ -568,6 +572,10 @@ public:
 class CTraverseEraseRequestedSons : public IInstanceVisitor
 {
 public:
+	virtual ~CTraverseEraseRequestedSons()
+	{
+	}
+
 	virtual void visit(CInstance &inst)
 	{
 		CNotifySonDeletion notifySonDeletion(inst);
diff --git a/code/ryzom/client/src/r2/editor.h b/code/ryzom/client/src/r2/editor.h
index 27ca896ea..5aac2e786 100644
--- a/code/ryzom/client/src/r2/editor.h
+++ b/code/ryzom/client/src/r2/editor.h
@@ -376,6 +376,8 @@ public:
 
 	struct IInstanceObserver : public NLMISC::CRefCount // refptr'ed observers
 	{
+		virtual ~IInstanceObserver() {}
+
 		typedef NLMISC::CRefPtr<IInstanceObserver> TRefPtr;
 		// called when the watched instance has been created
 		virtual void onInstanceCreated(CInstance &/* instance */) {}
@@ -970,6 +972,7 @@ public:
 	// allowing for safe removal of observer when they are triggered
 	struct IObserverAction
 	{
+		virtual ~IObserverAction() { }
 		virtual void doAction(IInstanceObserver &obs) = 0;
 	};
 	void				triggerInstanceObserver(const TInstanceId &id, IObserverAction &action);
diff --git a/code/ryzom/common/src/game_share/object.h b/code/ryzom/common/src/game_share/object.h
index 880728618..0f74d70fa 100644
--- a/code/ryzom/common/src/game_share/object.h
+++ b/code/ryzom/common/src/game_share/object.h
@@ -44,6 +44,8 @@ class CSerializeContext;
 // vistor triggered at traversal of object tree. see CObject::visit
 struct IObjectVisitor
 {
+	virtual ~IObjectVisitor() { }
+
 	virtual void visit(CObjectRefId &/* obj */) {}
 	virtual void visit(CObjectString &/* obj */) {}
 	virtual void visit(CObjectNumber &/* obj */) {}