diff -rduP -x .svn -x '*.pyc' django-trunk/django/db/backends/ado_mssql/base.py django-new/django/db/backends/ado_mssql/base.py
--- django-trunk/django/db/backends/ado_mssql/base.py	2008-02-26 15:22:14.000000000 +0100
+++ django-new/django/db/backends/ado_mssql/base.py	2008-02-26 15:04:52.000000000 +0100
@@ -66,7 +66,9 @@
     def deferrable_sql(self):
         return " DEFERRABLE INITIALLY DEFERRED"
 
-    def last_insert_id(self, cursor, table_name, pk_name):
+    # FIXME: seq_name might be a useful thing to add to backends other
+    # than PostgreSQL
+    def last_insert_id(self, cursor, table_name, pk_name, seq_name):
         cursor.execute("SELECT %s FROM %s WHERE %s = @@IDENTITY" % (pk_name, table_name, pk_name))
         return cursor.fetchone()[0]
 
diff -rduP -x .svn -x '*.pyc' django-trunk/django/db/backends/__init__.py django-new/django/db/backends/__init__.py
--- django-trunk/django/db/backends/__init__.py	2008-02-26 15:22:14.000000000 +0100
+++ django-new/django/db/backends/__init__.py	2008-02-26 15:11:26.000000000 +0100
@@ -149,7 +149,9 @@
 
         return smart_unicode(sql) % u_params
 
-    def last_insert_id(self, cursor, table_name, pk_name):
+    # FIXME: seq_name might be a useful thing to add to backends other
+    # than PostgreSQL
+    def last_insert_id(self, cursor, table_name, pk_name, seq_name):
         """
         Given a cursor object that has just performed an INSERT statement into
         a table that has an auto-incrementing ID, returns the newly created ID.
diff -rduP -x .svn -x '*.pyc' django-trunk/django/db/backends/postgresql/operations.py django-new/django/db/backends/postgresql/operations.py
--- django-trunk/django/db/backends/postgresql/operations.py	2008-02-26 15:22:14.000000000 +0100
+++ django-new/django/db/backends/postgresql/operations.py	2008-02-26 15:08:46.000000000 +0100
@@ -32,8 +32,10 @@
             return 'CAST(%s AS TEXT)'
         return '%s'
 
-    def last_insert_id(self, cursor, table_name, pk_name):
-        cursor.execute("SELECT CURRVAL('\"%s_%s_seq\"')" % (table_name, pk_name))
+    def last_insert_id(self, cursor, table_name, pk_name, seq_name):
+        if seq_name is None:
+            seq_name = "%s_%s_seq" % (table_name, pk_name)
+        cursor.execute("SELECT CURRVAL('\"%s\"')" % seq_name)
         return cursor.fetchone()[0]
 
     def quote_name(self, name):
diff -rduP -x .svn -x '*.pyc' django-trunk/django/db/models/base.py django-new/django/db/models/base.py
--- django-trunk/django/db/models/base.py	2008-02-26 15:22:14.000000000 +0100
+++ django-new/django/db/models/base.py	2008-02-26 15:17:19.000000000 +0100
@@ -268,7 +268,7 @@
                     (qn(self._meta.db_table), qn(self._meta.pk.column),
                      connection.ops.pk_default_value()))
             if self._meta.has_auto_field and not pk_set:
-                setattr(self, self._meta.pk.attname, connection.ops.last_insert_id(cursor, self._meta.db_table, self._meta.pk.column))
+                setattr(self, self._meta.pk.attname, connection.ops.last_insert_id(cursor, self._meta.db_table, self._meta.pk.column, self._meta.pk.seq_name))
         transaction.commit_unless_managed()
 
         # Run any post-save hooks.
diff -rduP -x .svn -x '*.pyc' django-trunk/django/db/models/fields/__init__.py django-new/django/db/models/fields/__init__.py
--- django-trunk/django/db/models/fields/__init__.py	2008-02-26 15:22:14.000000000 +0100
+++ django-new/django/db/models/fields/__init__.py	2008-02-26 15:19:27.000000000 +0100
@@ -83,7 +83,7 @@
         core=False, rel=None, default=NOT_PROVIDED, editable=True, serialize=True,
         prepopulate_from=None, unique_for_date=None, unique_for_month=None,
         unique_for_year=None, validator_list=None, choices=None, radio_admin=None,
-        help_text='', db_column=None, db_tablespace=None):
+        help_text='', db_column=None, db_tablespace=None, seq_name=None):
         self.name = name
         self.verbose_name = verbose_name
         self.primary_key = primary_key
@@ -105,6 +105,7 @@
         self.help_text = help_text
         self.db_column = db_column
         self.db_tablespace = db_tablespace or settings.DEFAULT_INDEX_TABLESPACE
+        self.seq_name = seq_name
 
         # Set db_index to True if the field has a relationship and doesn't explicitly set db_index.
         self.db_index = db_index