My 30 students all have blogs hosted at WordPress.com Sometime over the past few weeks, the feeds stopped updating, both within Google Reader and with my local RSS reader, NetNewsWire. When I delete a feed and resubscribe to it, all of the blog’s posts do then show up, but the feed still does not update as new posts are published. I have being using WordPress.com for with my students for 5 years without no such problem. Has something changed at your end?
As we Volunteers cannot help you with this issue I’m suggesting your contact Staff and include all the RSS feed URLs you refer to in your support request. Here’s the link http://en.support.wordpress.com/contact/ After you use the searchbox, under the search results, at the bottom of the page there will be a section that says “Have you found the answer to your question?” You can choose either “Yes I found the answer to my question.” or “No I didn’t find the answer to my question and I would like to contact support for help.” The no option will reveal the contact form.