When I posted last wc_cleanup was 'running' and was 'currently running', so I had rerun the job , but that made no difference--however just a moment ago, I noticed that wp_update_themes was scheduled for last month and was 'currently running' -- So I tried rerunning this job and this seemed to clean things up in my cron.. Here's the new schedule:
wp_cache_preload_hook [] Next Run: 2013/04/08 19:48:23 (now) Non-repeating
woocommerce_cancel_unpaid_orders [] 2013/04/08 20:10:35 (now) Non-repeating
wp_scheduled_auto_draft_delete [] 2013/04/08 23:33:14 (2 hours 55 minutes) 86400 (1 day)
wp_cache_gc [] 2013/04/09 00:00:00 (3 hours 21 minutes) 86400 (1 day)
woocommerce_scheduled_sales [] 2013/04/09 05:00:00 (8 hours 21 minutes) 86400 (1 day)
wp_version_check [] 2013/04/09 06:46:44 (10 hours 8 minutes) 43200 (12 hours)
wp_update_plugins [] 2013/04/09 06:46:44 (10 hours 8 minutes) 43200 (12 hours)
wp_update_themes [] 2013/04/09 06:46:44 (10 hours 8 minutes) 43200 (12 hours)
woocommerce_cleanup_sessions [] 2013/04/09 07:03:41 (10 hours 25 minutes) 43200 (12 hours)
yoast_tracking [] 2013/04/09 15:29:07 (18 hours 50 minutes) 86400 (1 day)
wp_scheduled_delete [] 2013/04/09 18:46:52 (22 hours 8 minutes) 86400 (1 day)
dbmanager_cron_repair [] 2013/04/11 17:49:56 (2 days 21 hours)
Also notice now that the number of wc_session & wc_sesion_exp. entries has dropped from almost 30,000 to 4,000. Each time I refresh the page, this number varies by about 500..