Did you see this?
http://www.java.com/en/download/help/5000040200.xmlJust as a double check
In Firefox go to TOOLS>>OPTIONS>>Under the General tab
Click CONNECTIONS
What are the settings?
Now check out IE
In IE>>Click on TOOlS>>Internet Options
Under the Connections tab
I take it you are under Cable internet
Click on LAN Settings
What do the settings look like in there
Open the Java Icon in your control panel
What are the settings under Network Connections?
I don't think this will help, but I want to check on something
If you still have hijackthis
Can you open Hijackthis.exe
Click the Open Misc tools sections>>Open the "Hosts file manager"
Click the "Open in Notepad" button
A text file will open, can you copy and paste that whole log back here please