Index: Makefile
==================================================================
--- Makefile
+++ Makefile
@@ -82,7 +82,7 @@
 	$(INST)		help/str*2.1	-t /usr/share/man/man1/
 
 # start locally
 st2: run
 run:
-	python -B ./st2.py -D
+	MALLOC_CHECK_=2	 PYTHONVERBOSE=2  python -B  ./st2.py -D
 

Index: st2.py
==================================================================
--- st2.py
+++ st2.py
@@ -242,16 +242,15 @@
         
     # Notebook tab has been clicked (receives numeric page_num), but *NOT* yet changed (visually).
     def channel_switch(self, notebook, page, page_num=0, *args):
         self.current_channel = notebook.get_menu_label_text(notebook.get_nth_page(page_num))
         log.UI("main.channel_switch() :=", self.current_channel)
-        self.update_title()
+        # update window title, call plugin (e.g. channel link in toolbar)
+        uikit.do(self.update_title)
         # if first selected, load current category
         # (run in thread, to make it look speedy on first startup)
-        self.thread( 
-          self.channel().first_show
-        )
+        self.thread(self.channel().first_show)
 
     # Invoked from the menu instead, uses module name instead of numeric tab id
     def channel_switch_by_name(self, name):
         self.notebook_channels.set_current_page(self.channel_names.index(name))