--- drupal-7.0-alpha1/modules/system/system.install     2010-01-13 08:15:39.000000000 +0200
+++ d7/modules/system/system.install    2010-02-10 10:53:59.000000000 +0200
@@ -1217,7 +1217,7 @@
         'description' => 'The queue name.',
       ),
       'data' => array(
-        'type' => 'text',
+        'type' => 'blob',
         'not null' => FALSE,
         'size' => 'big',
         'serialize' => TRUE,