There's something wrong with the RSS feed for IT Conversations and it hasn't published a new show since Sunday (Thomas Malone). We're working on it and hope to have it fixed soon.
If you use iTunes to listen to IT Conversations, note that the default settings will only download the most recent show. That means that when our RSS comes back, you'll miss all but the last show. I've actually changed mine to download all the shows so that I don't miss them if I happen to not have iTunes fired up one particular day. To do this, go to
iTunes->Preferences->Podcasts
and set the pull down menu labeled "When new episodes are available:" to "Download all." That will ensure that you don't miss any IT Conversations shows now or in the future.