empty views

I've recently upgraded my test site to Drupal 6.14 and Date 6.x-2.4 (and also XML Sitemap 6.x-1.1 from a rc version, and Phone CCK 6.x-2.9); had already been using Calendar 6.x-2.2 and Views 6.x-2.6. PHP 5.2.8

the test site drp6.rvuuf.org
should be displaying at least one current event in a few places:
on home page (near top): Next Service
on home page (near bottom: Upcoming Events
Event Calendar (link in nav menu) [1 event in Sep; 4 in Oct]

however, these views are coming up empty.
(for comparison, the production site rvuuf.org -- still on Drupal 6.13 and Date 6.x-2.3 -- works fine.

although drp6.rvuuf.org is an old db snapshot, I had updated ~5 events to occur after now.
I've gone thru the Troubleshooting steps 1-7
picking a fairly simple view (NextService), I went thru and re-examined&re-updated the filter & sort settings & saved the view. emptied caches under Performance & Views; also rebuilt permissions (I had seen that suggested in a related post). when I hit the Preview button, there's still no event displayed. however, if I copy/paste the SQL into phpAdmin, it returns a single item (node 2182) as it should. i.e., drp6.rvuuf.org/node/2182
so it seems to me that the query fields & date formats are ok.
(the same SQL is generated in my test (Drupal 6.14/Date 6.x-2.4) and production systems (Drupal 6.13/Date 6.x-2.3).

SELECT node.nid AS nid,
   node_data_field_from.field_from_value AS node_data_field_from_field_from_value
 FROM node node 
 INNER JOIN term_node term_node_value_0 ON node.vid = term_node_value_0.vid AND term_node_value_0.tid = 94
 LEFT JOIN content_type_calevent node_data_field_from ON node.vid = node_data_field_from.vid
 WHERE ((node.status <> 0) AND (node.type in ('calevent')) AND (term_node_value_0.tid = 94))
    AND (DATE_FORMAT(ADDTIME(STR_TO_DATE(node_data_field_from.field_from_value, '%Y-%m-%dT%T'), SEC_TO_TIME(-25200)), '%Y-%m-%d') >= '2009-09-17' AND DATE_FORMAT(ADDTIME(STR_TO_DATE(node_data_field_from.field_from_value, '%Y-%m-%dT%T'), SEC_TO_TIME(-25200)), '%Y-%m-%d') <= '2009-09-23')
   ORDER BY node_data_field_from_field_from_value ASC

similar results with my other views -- the SQL copied from the view's Preview then pasted into phpAdmin returns entries. but nothing is appearing in the Preview or the view itself. I think I had tried downgrading to Date 6.x-2.3 but still nothing. suggestions?

Steve