RSS oddness

Those of you who use the site's RSS feed may have noticed some old articles mistakenly appearing as new over the past few days. From time to time I have to update old articles to correct mistakes or add new information and a bug in Blogger's new beta software seems to be republishing any old, updated articles in the RSS feed as new ones. There's not much I can do about it at the moment, but hopefully Blogger will fix the problem soon.