diff --git a/retroshare-gui/src/gui/feeds/GxsChannelPostItem.cpp b/retroshare-gui/src/gui/feeds/GxsChannelPostItem.cpp
index e47337cd6..a3c399753 100644
--- a/retroshare-gui/src/gui/feeds/GxsChannelPostItem.cpp
+++ b/retroshare-gui/src/gui/feeds/GxsChannelPostItem.cpp
@@ -86,6 +86,11 @@ GxsChannelPostItem::~GxsChannelPostItem()
 	delete(ui);
 }
 
+bool GxsChannelPostItem::isUnread() const
+{
+    return IS_MSG_UNREAD(mPost.mMeta.mMsgStatus) ;
+}
+
 void GxsChannelPostItem::setup()
 {
 	/* Invoke the Qt Designer generated object setup routine */
diff --git a/retroshare-gui/src/gui/feeds/GxsChannelPostItem.h b/retroshare-gui/src/gui/feeds/GxsChannelPostItem.h
index 3ddb54d6f..e12d30dc3 100644
--- a/retroshare-gui/src/gui/feeds/GxsChannelPostItem.h
+++ b/retroshare-gui/src/gui/feeds/GxsChannelPostItem.h
@@ -58,6 +58,8 @@ public:
 	/* FeedItem */
 	virtual void expand(bool open);
 
+    bool isUnread() const ;
+
 protected:
 	/* GxsGroupFeedItem */
 	virtual QString groupName();
diff --git a/retroshare-gui/src/gui/gxschannels/CreateGxsChannelMsg.cpp b/retroshare-gui/src/gui/gxschannels/CreateGxsChannelMsg.cpp
index d37a1f39d..08e85dcd8 100644
--- a/retroshare-gui/src/gui/gxschannels/CreateGxsChannelMsg.cpp
+++ b/retroshare-gui/src/gui/gxschannels/CreateGxsChannelMsg.cpp
@@ -411,10 +411,10 @@ void CreateGxsChannelMsg::addAttachment(const std::string &path)
 
 	rsGxsChannels->ExtraFileHash(path, filename);
 
-#warning: hash is used uninitialized below ?!?
-
-	// only path and filename are valid.
-	// destroyed when fileFrame (this subfileitem) is destroyed
+    // Only path and filename are valid.
+    // Destroyed when fileFrame (this subfileitem) is destroyed
+    // Hash will be retrieved later when the file is finished hashing.
+    //
 	//SubFileItem *file = new SubFileItem(hash, filename, path, size, flags, mChannelId); 
 	SubFileItem *file = new SubFileItem(hash, filename, path, size, flags, RsPeerId()); 
 
diff --git a/retroshare-gui/src/gui/gxschannels/GxsChannelPostsWidget.cpp b/retroshare-gui/src/gui/gxschannels/GxsChannelPostsWidget.cpp
index 2eb43f3d9..fcd7e8a08 100644
--- a/retroshare-gui/src/gui/gxschannels/GxsChannelPostsWidget.cpp
+++ b/retroshare-gui/src/gui/gxschannels/GxsChannelPostsWidget.cpp
@@ -505,15 +505,20 @@ void GxsChannelPostsWidget::insertRelatedPosts(const uint32_t &token)
 
 static void setAllMessagesReadCallback(FeedItem *feedItem, void *data)
 {
-	GxsChannelPostItem *channelPostItem = dynamic_cast<GxsChannelPostItem*>(feedItem);
-	if (!channelPostItem) {
-		return;
-	}
+    GxsChannelPostItem *channelPostItem = dynamic_cast<GxsChannelPostItem*>(feedItem);
+    if (!channelPostItem) {
+        return;
+    }
 
-	RsGxsGrpMsgIdPair msgPair = std::make_pair(channelPostItem->groupId(), channelPostItem->messageId());
+    bool is_not_new = !channelPostItem->isUnread() ;
 
-	uint32_t token;
-	rsGxsChannels->setMessageReadStatus(token, msgPair, *((bool*) data));
+    if(is_not_new == *(bool*)data)
+        return ;
+
+    RsGxsGrpMsgIdPair msgPair = std::make_pair(channelPostItem->groupId(), channelPostItem->messageId());
+
+    uint32_t token;
+    rsGxsChannels->setMessageReadStatus(token, msgPair, *((bool*) data));
 }
 
 void GxsChannelPostsWidget::setAllMessagesRead(bool read)