What does this mean?
 

File: plugin_1.xml
System
at System.Net.ServicePoint.GetConnection(PooledStream PooledStream, Boolean async, IPAddress& address, Socket& abortSocket, Socket& abortSocket6, DecrementTimer timer)
at System.Net.PooledStream.Activate(Object owningObject, Boolean async, DecrementTimer timer, GeneralAsyncDelegate asyncCallback)
at System.Net.Connection.CompleteStartConnection(Boolean onSubmitThread, Object state)
at System.Net.Connection.CompleteStartRequest(Boolean onSubmitThread, HttpWebRequest request, TriState needReConnect)
at System.Net.Connection.SubmitRequest(HttpWebRequest request)
at System.Net.ServicePoint.SubmitRequest(HttpWebRequest request, String connName)
at System.Net.HttpWebRequest.BeginSubmitRequest(DecrementTimer timer, Boolean forceFind)
at System.Net.HttpWebRequest.GetResponse()
at WindowsApplication7.DownloadWorker.DownloadFile()Unable to connect to the remote server
File: plugin_2.xml
System
at System.Net.ServicePoint.GetConnection(PooledStream PooledStream, Boolean async, IPAddress& address, Socket& abortSocket, Socket& abortSocket6, DecrementTimer timer)
at System.Net.PooledStream.Activate(Object owningObject, Boolean async, DecrementTimer timer, GeneralAsyncDelegate asyncCallback)
at System.Net.Connection.CompleteStartConnection(Boolean onSubmitThread, Object state)
at System.Net.Connection.CompleteStartRequest(Boolean onSubmitThread, HttpWebRequest request, TriState needReConnect)
at System.Net.Connection.SubmitRequest(HttpWebRequest request)
at System.Net.ServicePoint.SubmitRequest(HttpWebRequest request, String connName)
at System.Net.HttpWebRequest.BeginSubmitRequest(DecrementTimer timer, Boolean forceFind)
at System.Net.HttpWebRequest.GetResponse()
at WindowsApplication7.DownloadWorker.DownloadFile()Unable to connect to the remote server
File: under_exp01_rgn_sinking_sands.xml
System
at System.Net.ServicePoint.GetConnection(PooledStream PooledStream, Boolean async, IPAddress& address, Socket& abortSocket, Socket& abortSocket6, DecrementTimer timer)
at System.Net.PooledStream.Activate(Object owningObject, Boolean async, DecrementTimer timer, GeneralAsyncDelegate asyncCallback)
at System.Net.Connection.CompleteStartConnection(Boolean onSubmitThread, Object state)
at System.Net.Connection.CompleteStartRequest(Boolean onSubmitThread, HttpWebRequest request, TriState needReConnect)
at System.Net.Connection.SubmitRequest(HttpWebRequest request)
at System.Net.ServicePoint.SubmitRequest(HttpWebRequest request, String connName)
at System.Net.HttpWebRequest.BeginSubmitRequest(DecrementTimer timer, Boolean forceFind)
at System.Net.HttpWebRequest.GetResponse()
at WindowsApplication7.DownloadWorker.DownloadFile()Unable to connect to the remote server

it means the update is having problems connecting, make sure that whatever firewall you have is set up to allow the updater access to the internet and that internet explorer is set up properly (the proxy settings ect). It could also just be a single time occurence and if so then you dont have to worry about it.

Thankx to you, I fixed it.