Within web ADF applications, you cannot make local or Distributed Component Object Model (DCOM) connections to 10.1 sites. Local connections were previously used for the purposes of web editing and working with fine-grained ArcObjects. At ArcGIS 10.1 for Server, ArcObjects can be used to extend the server through Server Object Extensions (SOEs) without the need for a local connection. If you want to build a web editing application, you can use feature services in conjunction with the ArcGIS web APIs, the ArcGIS Viewer for Flex, and the ArcGIS Viewer for Silverlight.
Does this mean that if a web application is built using the new "ArcGIS Web Applications Manager", web editing is not an option, but only if built using an API?
Another option you may want to look into is using the web application templates from ArcGIS Online. You can download their source code and modify them using JavaScript to meet your requirements. I know there is one designed for web editing.
