After updating to WP 3.5, the Edit CSS function is no longer working for me.
All of the CSS changes still appear, but the Edit CSS page shows a blank, uneditable window. De/Reactivating the plugin did not help.
Using other RSS Aggregators, the dates appear correctly, and they also appear correct when viewing the XML.
Is this a new issue with Google Reader/iGoogle?
I had the feed on my iGoogle page for more than a week before this error occurred.
I appear to be having a similar problem.
Yesterday I signed up for FeedBurner, and now the RSS feed that I see in iGoogle and Google Reader all have yesterdays date.
Feed: http://thehumanist.com/wordpress/index.php/feed/