How can I keep reading all the messages from private message queue using threads

Hi,
Im using windows froms exe application to read and send messages to private
message queues.
Using threads how can I keep reading all the messages from MS private
message queuing without lossing any message thread.
Its seem to me that some messages stays in the private message queue and
want pickup by " MessageQueue.Receive()".
I have short code example below which im using in my application, The code
below won't read every time messages from message queues.

public class Messages
{
public Messages()
{
thd = new Thread(new ThreadStart(MsgThread));
thd.Start();
Thread.Sleep( 10 );
}

public void MsgThread()
{
string queueRequest = .\private$\appliaction_request
MessageQueue mq = new MessageQueue(queueRequest)
while (true)
{
Message msg = mq.Receive();
StreamReader sr = new StreamReader( msg.BodyStream );
string body = sr.ReadToEnd();
}
}
}

Cheers

Sam