The following links are very helpful to figure out the problem that shows "NotFound" errors in Silverlight.

Dealing with those pesky WCF CommunicationException “NotFound” errors in Silverlight

http://blogs.msdn.com/b/silverlightws/archive/2010/04/15/dealing-with-those-pesky-wcf-communicationexception-notfound-errors-in-silverlight.aspx

Creating and Handling Faults in Silverlight

Configuring WCF SOAP Faults for Use with Silverlight Clients

Do not forget to call Close (CloseAsync in case of Silverlight) of Proxy Service Client!

sl4_wcf_nettcp_duplex_article.zip

References:

• http://www.dotnetcurry.com/showarticle.aspx?ID=726
• http://msdn.microsoft.com/en-us/library/cc645027(v=vs.95).aspx
• http://msdn.microsoft.com/en-us/library/ee844557(v=vs.95).aspx
• http://blogs.msdn.com/b/silverlightws/archive/2010/07/16/pollingduplex-multiple-mode-timeouts-demystified.aspx
• http://blogs.msdn.com/b/silverlightws/archive/2010/04/04/some-known-wcf-issues-in-silverlight-4.aspx
• http://idunno.org/archive/2008/05/29/wcf-callbacks-a-beginners-guide.aspx
• http://msdn.microsoft.com/en-us/library/ee844556(v=vs.95).aspx

For a few days I was digging how to show the log in real time when running a linux command with SSH.NET. It doesn't look easy but thankfully there is simple way to do that. Here is an example:

client.Connect();

var cmd = client.CreateCommand("ls -l");   //  very long list 
cmd.CommandTimeout = TimeSpan.FromSeconds(30);
var asynch = cmd.BeginExecute();

var reader = new StreamReader(cmd.OutputStream);

while (!asynch.IsCompleted)
{
    var result = reader.ReadToEnd();
    if (string.IsNullOrEmpty(result))
        continue;
    Console.Write(result);
}
cmd.EndExecute(asynch);

client.Disconnect();

Source: https://sshnet.codeplex.com/documentation

SshNet.Help.chm

http://msdn.microsoft.com/ko-kr/library/ms752347.aspx

http://msdn.microsoft.com/en-us/library/gg406140.aspx

Prism provides guidance designed to help you more easily design and build rich, flexible, and easily maintained Windows Presentation Foundation (WPF) desktop applications, Silverlight Rich Internet Applications (RIAs), and Windows Phone 7 applications. Using design patterns that embody important architectural design principles, such as separation of concerns and loose coupling, Prism helps you to design and build applications using loosely coupled components that can evolve independently but which can be easily and seamlessly integrated into the overall application. These types of applications are known as composite applications.

http://compositewpf.codeplex.com/

MVMV Training combines in-depth written guidance with full-featured how-to code examples. MVVM Training is a Visual Studio 2010 Feature Extension and is part of the In the Box training series by Karl Shifflett.