As a follow up to my previous post When Page Output Caching Does Not Output I have recorded a video which actually walks you through the steps and issues which I documented in this previous post. So for those of you whom don’t like to read all that much you may watch this video and/or refer back to my previous post on the same subject.
One update on this video I mention MS11-100 and the fact it breaks page output caching in SharePoint. The SharePoint PG has released a fix which is available in the April 2012 CU. You can get more information on SharePoint CUs from my version page.