Index: system.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.install,v
retrieving revision 1.40
diff -u -r1.40 system.install
--- system.install	8 Nov 2006 19:24:11 -0000	1.40
+++ system.install	15 Nov 2006 10:01:25 -0000
@@ -693,7 +693,7 @@
       db_query("CREATE INDEX {node_comment_statistics}_node_comment_timestamp_idx ON {node_comment_statistics} (last_comment_timestamp)");
 
       db_query("CREATE TABLE {files} (
-        fid int_unsigned NOT NULL default 0,
+        fid serial NOT NULL,
         nid int_unsigned NOT NULL default 0,
         filename varchar(255) NOT NULL default '',
         filepath varchar(255) NOT NULL default '',