Database errors??

I am seeing this in the logs all over the place after the 3.1 upgrade:

‘[Tue Jul 16 21:51:58 2013] [error] [client 173.72.246.247] WordPress database error Not unique table/alias: ‘stitchtek_wp_6_postmeta’ for query SELECT stitchtek_wp_6_posts.ID FROM stitchtek_wp_6_posts INNER JOIN stitchtek_wp_6_postmeta ON (stitchtek_wp_6_posts.ID = stitchtek_wp_6_postmeta.post_id) INNER JOIN stitchtek_wp_6_postmeta ON stitchtek_wp_6_posts.ID = stitchtek_wp_6_postmeta.post_id WHERE 1=1 AND stitchtek_wp_6_posts.post_type IN (‘post’, ‘page’, ‘plugin_filter’) AND (stitchtek_wp_6_posts.post_status = ‘publish’) AND ( (stitchtek_wp_6_postmeta.meta_key = ‘_PO_permalink’ AND CAST(stitchtek_wp_6_postmeta.meta_value AS CHAR) LIKE ‘%www.v-fit.us/’) ) AND ( stitchtek_wp_6_postmeta.meta_key = ‘enclosure’ ) GROUP BY stitchtek_wp_6_posts.ID ORDER BY stitchtek_wp_6_posts.post_date DESC LIMIT 0, 5 made by require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), do_feed, do_action(‘do_feed_podcast’), call_user_func_array, powerpress_do_podcast_feed, do_feed_rss2, load_template, require_once(‘wp-includes/feed-rss2.php’), the_excerpt_rss, get_the_excerpt, apply_filters(‘get_the_excerpt’), call_user_func_array, wp_trim_excerpt, apply_filters(‘the_content’), call_user_func_array, rcp_display_message_to_non_loggged_in_users, rcp_user_has_access, rcp_get_subscription_access_level, RCP_Levels->__construct, rcp_get_levels_db_name, is_plugin_active_for_network, get_site_option, apply_filters(‘site_option_active_sitewide_plugins’), call_user_func_array, PluginOrganizerMU->disable_network_plugins, PluginOrganizerMU->disable_plugins, get_posts, WP_Query->query, WP_Query->get_posts’

http://ww.wp.xz.cn/extend/plugins/plugin-organizer/