Date: Date (node) filter not applied in Views

Date 6.x-2.3, PHP 5.2.6, Drupal 6.13
This does not seem to be the same as the other views-related issues posted here...

I have created a view to show upcoming events, so I added a filter on date: date (node) and specified my date field and >= 'now'

The date filter clause does not appear at all in the preview query, and all event nodes are shown in the result set. It happened first in a calendar view, so I created a separate view with just one display to see if that would fix it. I am still getting the same problem.

Any suggestions? thanks

Here's the preview query:

SELECT node.nid AS nid,
   node_data_field_eventdate.field_eventdate_value AS node_data_field_eventdate_field_eventdate_value,
   node_data_field_eventdate.field_eventdate_value2 AS node_data_field_eventdate_field_eventdate_value2,
   node.type AS node_type,
   node.vid AS node_vid,
   node.title AS node_title
 FROM node node 
 INNER JOIN term_node term_node ON node.vid = term_node.vid
 LEFT JOIN content_type_event node_data_field_eventdate ON node.vid = node_data_field_eventdate.vid
 WHERE (node.status <> 0) AND (node.type in ('event')) AND (term_node.tid = 2)
   ORDER BY node_data_field_eventdate_field_eventdate_value ASC

here's the view export:

$view = new view;
$view->name = 'music_upc_event_blk';
$view->description = 'Upcoming Events Block';
$view->tag = '';
$view->view_php = '';
$view->base_table = 'node';
$view->is_cacheable = FALSE;
$view->api_version = 2;
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */
$handler = $view->new_display('default', 'Defaults', 'default');
$handler->override_option('fields', array(
  'field_eventdate_value' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'strip_tags' => 0,
      'html' => 0,
    ),
    'link_to_node' => 0,
    'label_type' => 'none',
    'format' => 'short',
    'multiple' => array(
      'multiple_number' => '',
      'multiple_from' => '',
      'multiple_to' => '',
      'group' => TRUE,
    ),
    'repeat' => array(
      'show_repeat_rule' => '',
    ),
    'fromto' => array(
      'fromto' => 'value',
    ),
    'exclude' => 0,
    'id' => 'field_eventdate_value',
    'table' => 'node_data_field_eventdate',
    'field' => 'field_eventdate_value',
    'relationship' => 'none',
  ),
  'title' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'strip_tags' => 0,
      'html' => 0,
    ),
    'link_to_node' => 1,
    'exclude' => 0,
    'id' => 'title',
    'table' => 'node',
    'field' => 'title',
    'relationship' => 'none',
  ),
));
$handler->override_option('sorts', array(
  'field_eventdate_value' => array(
    'order' => 'ASC',
    'delta' => -1,
    'id' => 'field_eventdate_value',
    'table' => 'node_data_field_eventdate',
    'field' => 'field_eventdate_value',
    'relationship' => 'none',
  ),
));
$handler->override_option('filters', array(
  'date_filter' => array(
    'operator' => '>=',
    'value' => array(
      'value' => NULL,
      'min' => NULL,
      'max' => NULL,
      'default_date' => '\'now\'',
      'default_to_date' => '',
    ),
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'date_fields' => array(
      'node_data_field_eventdate.field_eventdate_value' => 'node_data_field_eventdate.field_eventdate_value',
    ),
    'date_method' => 'OR',
    'granularity' => 'day',
    'form_type' => 'date_select',
    'default_date' => '\'now\'',
    'default_to_date' => '',
    'year_range' => '-3:+3',
    'id' => 'date_filter',
    'table' => 'node',
    'field' => 'date_filter',
    'relationship' => 'none',
  ),
  'status' => array(
    'operator' => '=',
    'value' => '1',
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'id' => 'status',
    'table' => 'node',
    'field' => 'status',
    'relationship' => 'none',
  ),
  'type' => array(
    'operator' => 'in',
    'value' => array(
      'event' => 'event',
    ),
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'id' => 'type',
    'table' => 'node',
    'field' => 'type',
    'relationship' => 'none',
  ),
  'tid' => array(
    'operator' => 'or',
    'value' => array(
      '2' => '2',
    ),
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'type' => 'select',
    'limit' => TRUE,
    'vid' => '3',
    'id' => 'tid',
    'table' => 'term_node',
    'field' => 'tid',
    'hierarchy' => 0,
    'relationship' => 'none',
    'reduce_duplicates' => 0,
  ),
));
$handler->override_option('access', array(
  'type' => 'none',
));
$handler->override_option('cache', array(
  'type' => 'none',
));
$handler->override_option('header', '<h3 class="feature">Upcoming events:</h3>');
$handler->override_option('header_format', '4');
$handler->override_option('header_empty', 0);
$handler->override_option('empty', 'Stay tuned for new events!');
$handler->override_option('empty_format', '4');
$handler->override_option('items_per_page', 4);
$handler = $view->new_display('block', 'Block', 'block_1');
$handler->override_option('block_description', '');
$handler->override_option('block_caching', -1);