Index: Lib/test/test_linecache.py
===================================================================
--- Lib/test/test_linecache.py	(revision 76671)
+++ Lib/test/test_linecache.py	(working copy)
@@ -114,6 +114,7 @@
                 for index, line in enumerate(source):
                     self.assertEquals(line, getline(source_name, index + 1))
                     source_list.append(line)
+                source.close()
 
         finally:
             support.unlink(source_name)
Index: Lib/test/support.py
===================================================================
--- Lib/test/support.py	(revision 76671)
+++ Lib/test/support.py	(working copy)
@@ -12,6 +12,7 @@
 import os
 import platform
 import shutil
+import time
 import warnings
 import unittest
 import importlib
@@ -175,6 +176,23 @@
         os.unlink(filename)
     except OSError:
         pass
+    if os.name == 'nt':
+        ERROR_FILE_NOT_FOUND = 2
+        ERROR_PATH_NOT_FOUND = 3
+        ERROR_ACCESS_DENIED = 5
+        for i in range(5):
+            try:
+                os.stat(filename)
+            except WindowsError as e:
+                if e.winerror in (ERROR_FILE_NOT_FOUND, ERROR_PATH_NOT_FOUND):
+                    return 
+                elif e.winerror == ERROR_ACCESS_DENIED:
+                    pass
+                else:
+                    raise
+            # increate sleep time every next iteration
+            time.sleep(i * 0.1)
+        raise AssertionError("Cannot delete " + filename)
 
 def rmtree(path):
     try: