>I am not sure it this could help but it cannot hurt, I am using the Using\End Using approach to encapsulate the StreamReader class:
>
>

>                        ' FTP setup
>                        loFtpWebRequest = System.Net.FtpWebRequest.Create(New Uri(lcURI))
>                        loFtpWebRequest.Credentials = New System.Net.NetworkCredential(cUsername, cPassword)
>                        loFtpWebRequest.Method = System.Net.WebRequestMethods.Ftp.ListDirectoryDetails
>
>                        ' If we use FTP/SSL  (AUTH SSL)
>                        If nNoFTPProtocol = 2 Then
>                            loFtpWebRequest.EnableSsl = True
>                        End If
>
>                        loFtpWebResponse = loFtpWebRequest.GetResponse()
>
>                        Using loStreamReader As New StreamReader(loFtpWebResponse.GetResponseStream())
>
>                            ' Load the files into the string builder
>                            loStringBuilder.LoadString(loStreamReader.ReadToEnd())
>
>                        End Using
>

>
>This is the part that deals with memory so maybe this could have been a factor.


I was going to suggest something similar

In addition to Disposing of the StreamReader, I think you need to do the same for

loFtpWebResponse.GetResponseStream()  // the stream
loFtpWebResponse 

In addition, could you reuse the following (rather than instantiating each time)

New Uri(lcURI)
New System.Net.NetworkCredential(cUsername, cPassword)