>>Still, you need a USING. If you don't do that, you're giving extra work to the garbage collector
>
>Like this?
>

I would put the Using loMD5CryptoServiceProvider = New MD5CryptoServiceProvider() outside the for/next loop

Using loMD5CryptoServiceProvider = New MD5CryptoServiceProvider()

//  here the for
     Using loStream As Stream = New FileStream(cFileName, FileMode.Open)

     end using
// here next

 End Using

>

>                    ' Open the destination
>                    Using loStream As Stream = New FileStream(cFileName, FileMode.Open)
>
>                        ' Create the crypto service provider object
>                        Using loMD5CryptoServiceProvider = New MD5CryptoServiceProvider()
>
>                            ' Compute the hash of the fileStream
>                            oMD5 = loMD5CryptoServiceProvider.ComputeHash(loStream)
>
>                        End Using
>
>                    End Using
>