--- system.install	2007-01-03 11:56:18.000000000 +0000
+++ system.install.new	2007-01-05 21:21:01.000000000 +0000
@@ -544,7 +544,7 @@
         access int NOT NULL default '0',
         login int NOT NULL default '0',
         status tinyint NOT NULL default '0',
-        timezone varchar(8) default NULL,
+        timezone varchar(8) default 0,
         language varchar(12) NOT NULL default '',
         picture varchar(255) NOT NULL DEFAULT '',
         init varchar(64) default '',
@@ -1010,7 +1010,7 @@
         access int NOT NULL default '0',
         login int NOT NULL default '0',
         status smallint NOT NULL default '0',
-        timezone varchar(8) default NULL,
+        timezone varchar(8) default 0,
         language varchar(12) NOT NULL default '',
         picture varchar(255) NOT NULL DEFAULT '',
         init varchar(64) default '',