diff --git a/Lib/bsddb/__init__.py b/Lib/bsddb/__init__.py
index 6b4f965..4671acc 100644
--- a/Lib/bsddb/__init__.py
+++ b/Lib/bsddb/__init__.py
@@ -33,11 +33,18 @@
 #----------------------------------------------------------------------
 
 
-"""Support for BerkeleyDB 3.1 through 4.1.
+"""Support for BerkeleyDB 3.2 through 4.2.
 """
 
 try:
-    import _bsddb
+    if __name__ == 'bsddb3':
+        # import _pybsddb binary as it should be the more recent version from
+        # a standalone pybsddb addon package than the version included with
+        # python as bsddb._bsddb.
+        import _pybsddb
+        _bsddb = _pybsddb
+    else:
+        import _bsddb
 except ImportError:
     # Remove ourselves from sys.modules
     import sys
diff --git a/Lib/bsddb/db.py b/Lib/bsddb/db.py
index c1749df..b2ee14e 100644
--- a/Lib/bsddb/db.py
+++ b/Lib/bsddb/db.py
@@ -37,8 +37,15 @@
 # case we ever want to augment the stuff in _db in any way.  For now
 # it just simply imports everything from _db.
 
-from _bsddb import *
-from _bsddb import __version__
+if __name__[:len('bsddb3.')] == 'bsddb3.':
+    # import _pybsddb binary as it should be the more recent version from
+    # a standalone pybsddb addon package than the version included with
+    # python as bsddb._bsddb.
+    from _pybsddb import *
+    from _pybsddb import __version__
+else:
+    from _bsddb import *
+    from _bsddb import __version__
 
-if version() < (3, 1, 0):
-    raise ImportError, "BerkeleyDB 3.x symbols not found.  Perhaps python was statically linked with an older version?"
+if version() < (3, 2, 0):
+    raise ImportError, "correct BerkeleyDB symbols not found.  Perhaps python was statically linked with an older version?"
diff --git a/Lib/bsddb/dbshelve.py b/Lib/bsddb/dbshelve.py
index fe4c4d1..003038b 100644
--- a/Lib/bsddb/dbshelve.py
+++ b/Lib/bsddb/dbshelve.py
@@ -35,12 +35,7 @@
 except ImportError:
     # DictMixin is new in Python 2.3
     class DictMixin: pass
-try:
-    # For Python 2.3
-    from bsddb import db
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db
+import db
 
 #------------------------------------------------------------------------
 
diff --git a/Lib/bsddb/dbtables.py b/Lib/bsddb/dbtables.py
index d052ca5..6edfd29 100644
--- a/Lib/bsddb/dbtables.py
+++ b/Lib/bsddb/dbtables.py
@@ -26,11 +26,11 @@
 import cPickle as pickle
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3.db import *
+except ImportError:
     # For Python 2.3
     from bsddb.db import *
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3.db import *
 
 
 class TableDBError(StandardError):
diff --git a/Lib/bsddb/dbutils.py b/Lib/bsddb/dbutils.py
index 3568b44..3f63842 100644
--- a/Lib/bsddb/dbutils.py
+++ b/Lib/bsddb/dbutils.py
@@ -26,12 +26,7 @@
 #
 from time import sleep as _sleep
 
-try:
-    # For Python 2.3
-    from bsddb import db
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db
+import db
 
 # always sleep at least N seconds between retrys
 _deadlock_MinSleepTime = 1.0/64
diff --git a/Lib/bsddb/test/test_all.py b/Lib/bsddb/test/test_all.py
index 358f5d1..3bf70d7 100644
--- a/Lib/bsddb/test/test_all.py
+++ b/Lib/bsddb/test/test_all.py
@@ -17,11 +17,11 @@
 
 def print_versions():
     try:
+        # For Pythons w/distutils pybsddb
+        from bsddb3 import db
+    except ImportError:
         # For Python 2.3
         from bsddb import db
-    except ImportError:
-        # For earlier Pythons w/distutils pybsddb
-        from bsddb3 import db
     print
     print '-=' * 38
     print db.DB_VERSION_STRING
diff --git a/Lib/bsddb/test/test_associate.py b/Lib/bsddb/test/test_associate.py
index 5fe41a9..f810eb0 100644
--- a/Lib/bsddb/test/test_associate.py
+++ b/Lib/bsddb/test/test_associate.py
@@ -17,11 +17,11 @@
 from test_all import verbose
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db, dbshelve
+except ImportError:
     # For Python 2.3
     from bsddb import db, dbshelve
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db, dbshelve
 
 
 #----------------------------------------------------------------------
diff --git a/Lib/bsddb/test/test_basics.py b/Lib/bsddb/test/test_basics.py
index dbab231..2e6b922 100644
--- a/Lib/bsddb/test/test_basics.py
+++ b/Lib/bsddb/test/test_basics.py
@@ -13,11 +13,11 @@
 import unittest
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db
+except ImportError:
     # For Python 2.3
     from bsddb import db
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db
 
 from test_all import verbose
 
diff --git a/Lib/bsddb/test/test_compat.py b/Lib/bsddb/test/test_compat.py
index 645cbd7..12464ca 100644
--- a/Lib/bsddb/test/test_compat.py
+++ b/Lib/bsddb/test/test_compat.py
@@ -10,11 +10,11 @@
 from test_all import verbose
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db, hashopen, btopen, rnopen
+except ImportError:
     # For Python 2.3
     from bsddb import db, hashopen, btopen, rnopen
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db, hashopen, btopen, rnopen
 
 
 class CompatibilityTestCase(unittest.TestCase):
diff --git a/Lib/bsddb/test/test_dbobj.py b/Lib/bsddb/test/test_dbobj.py
index 93ea7ba..6799fc9 100644
--- a/Lib/bsddb/test/test_dbobj.py
+++ b/Lib/bsddb/test/test_dbobj.py
@@ -4,11 +4,11 @@
 import glob
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db, dbobj
+except ImportError:
     # For Python 2.3
     from bsddb import db, dbobj
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db, dbobj
 
 
 #----------------------------------------------------------------------
diff --git a/Lib/bsddb/test/test_dbshelve.py b/Lib/bsddb/test/test_dbshelve.py
index 7491cb7..722ee5b 100644
--- a/Lib/bsddb/test/test_dbshelve.py
+++ b/Lib/bsddb/test/test_dbshelve.py
@@ -9,11 +9,11 @@
 import unittest
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db, dbshelve
+except ImportError:
     # For Python 2.3
     from bsddb import db, dbshelve
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db, dbshelve
 
 from test_all import verbose
 
diff --git a/Lib/bsddb/test/test_dbtables.py b/Lib/bsddb/test/test_dbtables.py
index 685b08d..eb5758f 100644
--- a/Lib/bsddb/test/test_dbtables.py
+++ b/Lib/bsddb/test/test_dbtables.py
@@ -31,11 +31,11 @@
 from test_all import verbose
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db, dbtables
+except ImportError:
     # For Python 2.3
     from bsddb import db, dbtables
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db, dbtables
 
 
 
diff --git a/Lib/bsddb/test/test_env_close.py b/Lib/bsddb/test/test_env_close.py
index 105be44..c112941 100644
--- a/Lib/bsddb/test/test_env_close.py
+++ b/Lib/bsddb/test/test_env_close.py
@@ -9,11 +9,11 @@
 import unittest
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db
+except ImportError:
     # For Python 2.3
     from bsddb import db
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db
 
 from test_all import verbose
 
diff --git a/Lib/bsddb/test/test_get_none.py b/Lib/bsddb/test/test_get_none.py
index 40b224e..5f09cec 100644
--- a/Lib/bsddb/test/test_get_none.py
+++ b/Lib/bsddb/test/test_get_none.py
@@ -8,11 +8,11 @@
 import unittest
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db
+except ImportError:
     # For Python 2.3
     from bsddb import db
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db
 
 from test_all import verbose
 
diff --git a/Lib/bsddb/test/test_join.py b/Lib/bsddb/test/test_join.py
index 838ffe7..73edd11 100644
--- a/Lib/bsddb/test/test_join.py
+++ b/Lib/bsddb/test/test_join.py
@@ -16,11 +16,11 @@
 from test_all import verbose
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db, dbshelve
+except ImportError:
     # For Python 2.3
     from bsddb import db, dbshelve
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db, dbshelve
 
 
 #----------------------------------------------------------------------
diff --git a/Lib/bsddb/test/test_lock.py b/Lib/bsddb/test/test_lock.py
index 008f89d..4a5adc4 100644
--- a/Lib/bsddb/test/test_lock.py
+++ b/Lib/bsddb/test/test_lock.py
@@ -19,11 +19,11 @@
 from test_all import verbose
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db
+except ImportError:
     # For Python 2.3
     from bsddb import db
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db
 
 
 #----------------------------------------------------------------------
diff --git a/Lib/bsddb/test/test_misc.py b/Lib/bsddb/test/test_misc.py
index 43d194a..a66b1de 100644
--- a/Lib/bsddb/test/test_misc.py
+++ b/Lib/bsddb/test/test_misc.py
@@ -6,11 +6,11 @@
 import unittest
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db, dbshelve
+except ImportError:
     # For Python 2.3
     from bsddb import db, dbshelve
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db, dbshelve
 
 #----------------------------------------------------------------------
 
diff --git a/Lib/bsddb/test/test_queue.py b/Lib/bsddb/test/test_queue.py
index 24b86cb..95cf20d 100644
--- a/Lib/bsddb/test/test_queue.py
+++ b/Lib/bsddb/test/test_queue.py
@@ -8,11 +8,11 @@
 import unittest
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db
+except ImportError:
     # For Python 2.3
     from bsddb import db
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db
 
 from test_all import verbose
 
diff --git a/Lib/bsddb/test/test_recno.py b/Lib/bsddb/test/test_recno.py
index 3e517c1..87446d3 100644
--- a/Lib/bsddb/test/test_recno.py
+++ b/Lib/bsddb/test/test_recno.py
@@ -11,11 +11,11 @@
 from test_all import verbose
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db
+except ImportError:
     # For Python 2.3
     from bsddb import db
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db
 
 letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
 
diff --git a/Lib/bsddb/test/test_thread.py b/Lib/bsddb/test/test_thread.py
index cf4237c..59af027 100644
--- a/Lib/bsddb/test/test_thread.py
+++ b/Lib/bsddb/test/test_thread.py
@@ -28,11 +28,11 @@
 from test_all import verbose
 
 try:
+    # For Pythons w/distutils pybsddb
+    from bsddb3 import db, dbutils
+except ImportError:
     # For Python 2.3
     from bsddb import db, dbutils
-except ImportError:
-    # For earlier Pythons w/distutils pybsddb
-    from bsddb3 import db, dbutils
 
 
 #----------------------------------------------------------------------
diff --git a/Modules/_bsddb.c b/Modules/_bsddb.c
index dcbcdb3..f24c713 100644
--- a/Modules/_bsddb.c
+++ b/Modules/_bsddb.c
@@ -36,7 +36,7 @@
 /*
  * Handwritten code to wrap version 3.x of the Berkeley DB library,
  * written to replace a SWIG-generated file.  It has since been updated
- * to compile with BerkeleyDB versions 3.2 through 4.1.
+ * to compile with BerkeleyDB versions 3.2 through 4.2.
  *
  * This module was started by Andrew Kuchling to remove the dependency
  * on SWIG in a package by Gregory P. Smith <greg@electricrain.com> who
@@ -93,7 +93,7 @@
 /* 40 = 4.0, 33 = 3.3; this will break if the second number is > 9 */
 #define DBVER (DB_VERSION_MAJOR * 10 + DB_VERSION_MINOR)
 
-#define PY_BSDDB_VERSION "4.1.6"
+#define PY_BSDDB_VERSION "4.2.0"
 static char *rcs_id = "$Id$";
 
 
@@ -2167,6 +2167,17 @@
     MYDB_END_ALLOW_THREADS;
     if (outFileName)
         fclose(outFile);
+
+    /* DB.verify acts as a DB handle destructor (like close); this was
+     * documented in BerkeleyDB 4.2 but had the undocumented effect
+     * of not being safe in prior versions while still requiring an explicit
+     * DB.close call afterwards.  Lets call close for the user to emulate
+     * the safe 4.2 behaviour. */
+#if (DBVER <= 41)
+    self->db->close(self->db, 0);
+#endif
+    self->db = NULL;
+
     RETURN_IF_ERR();
     RETURN_NONE();
 }
@@ -4340,7 +4351,8 @@
  */
 #define ADD_INT(dict, NAME)         _addIntToDict(dict, #NAME, NAME)
 
-
+#define MODULE_NAME_MAX_LEN     11
+static char _bsddbModuleName[MODULE_NAME_MAX_LEN+1] = "_bsddb";
 
 DL_EXPORT(void) init_bsddb(void)
 {
@@ -4365,7 +4377,7 @@
 #endif
 
     /* Create the module and add the functions */
-    m = Py_InitModule("_bsddb", bsddb_methods);
+    m = Py_InitModule(_bsddbModuleName, bsddb_methods);
 
     /* Add some symbolic constants to the module */
     d = PyModule_GetDict(m);
@@ -4386,7 +4398,13 @@
     ADD_INT(d, DB_MAX_PAGES);
     ADD_INT(d, DB_MAX_RECORDS);
 
+#if (DBVER >= 42)
+    ADD_INT(d, DB_RPCCLIENT);
+#else
     ADD_INT(d, DB_CLIENT);
+    /* allow apps to be written using DB_RPCCLIENT on older BerkeleyDB */
+    _addIntToDict(d, "DB_RPCCLIENT", DB_CLIENT);
+#endif
     ADD_INT(d, DB_XA_CREATE);
 
     ADD_INT(d, DB_CREATE);
@@ -4535,7 +4553,7 @@
     ADD_INT(d, DB_CHECKPOINT);
     ADD_INT(d, DB_CURLSN);
 #endif
-#if (DBVER >= 33)
+#if ((DBVER >= 33) && (DBVER <= 41))
     ADD_INT(d, DB_COMMIT);
 #endif
     ADD_INT(d, DB_CONSUME);
@@ -4610,6 +4628,18 @@
     ADD_INT(d, DB_NOPANIC);
 #endif
 
+#if (DBVER >= 42)
+    ADD_INT(d, DB_TIME_NOTGRANTED);
+    ADD_INT(d, DB_TXN_NOT_DURABLE);
+    ADD_INT(d, DB_TXN_WRITE_NOSYNC);
+    ADD_INT(d, DB_LOG_AUTOREMOVE);
+    ADD_INT(d, DB_DIRECT_LOG);
+    ADD_INT(d, DB_DIRECT_DB);
+    ADD_INT(d, DB_INIT_REP);
+    ADD_INT(d, DB_ENCRYPT);
+    ADD_INT(d, DB_CHKSUM);
+#endif
+
 #if (DBVER >= 41)
     ADD_INT(d, DB_ENCRYPT_AES);
     ADD_INT(d, DB_AUTO_COMMIT);
@@ -4686,3 +4716,12 @@
         Py_FatalError("can't initialize module _bsddb");
     }
 }
+
+/* allow this module to be named _pybsddb so that it can be installed
+ * and imported on top of python >= 2.3 that includes its own older
+ * copy of the library named _bsddb without importing the old version. */
+DL_EXPORT(void) init_pybsddb(void)
+{
+    strncpy(_bsddbModuleName, "_pybsddb", MODULE_NAME_MAX_LEN);
+    init_bsddb();
+}