diff --git a/IPython/deathrow/oldfrontend/asyncfrontendbase.py b/IPython/deathrow/oldfrontend/asyncfrontendbase.py
index 649ff21..ba912aa 100644
--- a/IPython/deathrow/oldfrontend/asyncfrontendbase.py
+++ b/IPython/deathrow/oldfrontend/asyncfrontendbase.py
@@ -22,13 +22,13 @@ from twisted.python.failure import Failure
 from zope.interface import implements, classProvides
 
 # From IPython
-from IPython.external import guid
-
 from IPython.frontend.frontendbase import (FrontEndBase, IFrontEnd,
                                            IFrontEndFactory)
 from IPython.kernel.core.history import FrontEndHistory
 from IPython.kernel.engineservice import IEngineCore
 
+import uuid
+
 #-----------------------------------------------------------------------------
 # Classes and functions
 #-----------------------------------------------------------------------------
@@ -67,7 +67,7 @@ class AsyncFrontEndBase(FrontEndBase):
             return Failure(Exception("Block is not compilable"))
 
         if(blockID == None):
-            blockID = guid.generate()
+            blockID = uuid.uuid4()
 
         d = self.engine.execute(block)
         d.addCallback(self._add_history, block=block)
diff --git a/IPython/deathrow/oldfrontend/cocoa/cocoa_frontend.py b/IPython/deathrow/oldfrontend/cocoa/cocoa_frontend.py
index ca1e058..a7ee199 100644
--- a/IPython/deathrow/oldfrontend/cocoa/cocoa_frontend.py
+++ b/IPython/deathrow/oldfrontend/cocoa/cocoa_frontend.py
@@ -26,7 +26,7 @@ __docformat__ = "restructuredtext en"
 
 import sys
 import objc
-from IPython.external import guid
+import uuid
 
 from Foundation import NSObject, NSMutableArray, NSMutableDictionary,\
                         NSLog, NSNotificationCenter, NSMakeRange,\
@@ -361,7 +361,7 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
 
     def next_block_ID(self):
 
-        return guid.generate()
+        return uuid.uuid4()
 
     def new_cell_block(self):
         """A new CellBlock at the end of self.textView.textStorage()"""
diff --git a/IPython/deathrow/oldfrontend/frontendbase.py b/IPython/deathrow/oldfrontend/frontendbase.py
index 3dc9f40..da02949 100644
--- a/IPython/deathrow/oldfrontend/frontendbase.py
+++ b/IPython/deathrow/oldfrontend/frontendbase.py
@@ -22,7 +22,7 @@ __docformat__ = "restructuredtext en"
 #-------------------------------------------------------------------------------
 import string
 import codeop
-from IPython.external import guid
+import uuid
 
 
 from IPython.frontend.zopeinterface import (
@@ -242,7 +242,7 @@ class FrontEndBase(object):
             raise Exception("Block is not compilable")
 
         if(blockID == None):
-            blockID = guid.generate()
+            blockID = uuid.uuid4()
 
         try:
             result = self.shell.execute(block)