Here are the links to the in my opinion most interesting SharePoint 2010 and SharePoint 2007 resources in October 2010.

With every link comes a short description of the content available.

This month is about SharePoint 2010 administration and development and Hyper-V.

SharePoint 2010 Administration

• Updated: Configure profile synchronization (SharePoint Server 2010)  
  You can’t have enough resources regarding that topic.

SharePoint 2010 Development

• My SP2010, AJAX and jQuery code samples and slide deck  
  SP2010 AJAX - Part 1: Boiling jQuery down to the essentials
  SP2010 AJAX–Part 2: Using the JavaScript Client OM + jQuery to work with lists
  There are code samples regarding SharePoint 2010 development with jQuery, the SharePoint Client OM (JavaScript version) and AJAX.

• Always Create Your Own Group Templates with SharePoint Ribbon Customizations
  Handling Events in the SharePoint Ribbon
  Implementing Page Components in the SharePoint Ribbon
  Understanding Focused vs. Global Commands in SharePoint Ribbon Page Components
  Asynchronously Checking if a Command is Available in the SharePoint Ribbon
  SharePoint 2010 ribbon development by Andrew Connell.

Virtualization (Hyper-V)

• How Hyper-V responds to disk failure
  Ben Armstrong tested it by himself what happens if a disk failure occurs.

I hope there are some interesting links for you too.