We've recently upgrade to WP 3.3.1 on three fair large sites. Each with a varying amount of traffic and each on a different hosting company. And all three are randomly not launching posts that are scheduled. I don't really see a pattern here with the exception of this happening since upgrading to WP 3.3 and 3.3.1.
We've looked to make sure wp-cron isn't disabled or if disabled there is a traditional cron job running.
Is this a bug with WP 3.3 or anyone have any suggestions with out having to install a plugin to try and fix this. Which I also tried and ended up having posts launching prematurely due to server and wp time difference. Either way, would really rather not have to rely on a plugin.
We've also trimmed plugins down the ones that are necessary to keep the sites running normally.