few days back i upgraded to 2.9 but since then all my scheduled posts are missing schedule.the time of publishing comes and goes . is there a problem with wp cron or what? i searched the net but in vain. HELP
It's a well known wordpress problem that has existed for many years. One of those "It works for some and not others" issues. If you review the trac you'll see the discussion on the topic: http://trac.wordpress.org Search for cron.