not sure when this happened, but my featured images are now not showing. Instead I see "NO THUMB"
Any ideas how I can find the cause ? So far I have disabled and reenabled all plugins, to no avail.
Thanks in advance
EDIT : The images exist on the server in several sizes. WP_DEBUG is currently set to false.
UPDATE : After checking the error_log file, it appears that the first critical error is this :
[09-Sep-2013 13:48:02] WordPress database error Table './myhosting_mydb/wp_postmeta' is marked as crashed and should be repaired for query SELECT post_id, meta_key, meta_value FROM wp_postmeta WHERE post_id IN (1520) made by require('wp-blog-header.php'), wp, WP->main, WP->query_posts, WP_Query->query, WP_Query->get_posts, update_post_caches, update_postmeta_cache, update_meta_cache
Not sure what to do with this, however....