Index: Lib/logging/__init__.py
===================================================================
--- Lib/logging/__init__.py	(revision 61169)
+++ Lib/logging/__init__.py	(working copy)
@@ -585,6 +585,7 @@
         Filterer.__init__(self)
         self.level = level
         self.formatter = None
+        self.loggers = []        # list of all loggers this handler is in
         #get the module data lock, as we're updating a shared structure.
         _acquireLock()
         try:    #unlikely to raise an exception, but you never know...
@@ -690,6 +691,10 @@
         """
         #get the module data lock, as we're updating a shared structure.
         _acquireLock()
+
+        #remove this handler from all loggers that are using it
+        while self.loggers:
+            self.loggers[0].removeHandler(self)
         try:    #unlikely to raise an exception, but you never know...
             del _handlers[self]
             _handlerList.remove(self)
@@ -1138,6 +1143,7 @@
         """
         if not (hdlr in self.handlers):
             self.handlers.append(hdlr)
+            hdlr.loggers.append(self)  # inform the handler it has been attached
 
     def removeHandler(self, hdlr):
         """
@@ -1145,6 +1151,7 @@
         """
         if hdlr in self.handlers:
             #hdlr.close()
+            hdlr.loggers.remove(self)  # inform the handler it has been detached
             hdlr.acquire()
             try:
                 self.handlers.remove(hdlr)