Unable to connect to a NAS running ext3 file format or any Windows Servers

I just purchased a new MacBook running 10.6.3. When first connecting to my NAS(last week), I had no issues connecting to my NAS server. I created an iSCSI drive for Time Machine, formatted for a MAC, no issues. In the last week something changed on my macbook that I can't connect to the NAS drive anymore. iSCSI is sill available. Also, I have an older MacBook(10.6.4) and MacPro (10.5.8) with issues connecting to my NAS drives.
What can i research on my new MacBook that is not allowing me to do this?
BTW, I am using QNAP 809 Pros NAS drive.
Thanks in advance.

I'm following up on my question. Still looking for help.

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I'm not able to connect to oracle database running on Windows machine from Linux machine. I'm geting the below mentioned error. I have given below the code I used to connect to database and database propertes.Do I need to use any specific driver?
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Sunjyoti
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import java.sql.Connection;
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UserName = dbuser
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hi
prop is {HostName=10.20.3.19, Password=dbuser, UserName=dbuser, SID=EDIREAD, Port=1521}
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import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.sql.Blob;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
//import com.entrust.toolkit.util.ByteArray;
public class trial{
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Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
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Alias LISTENER
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Hope this helps.
Regards,
Bose
Edited by: Bose on Mar 16, 2012 11:42 AM
Edited by: Bose on Mar 16, 2012 5:35 PM

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Unable to connect to a NAS running ext3 file format or any Windows Servers

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