Many thanks Xavier.. I have set the connection to 2 and max 
transfer rate to 25000. It's still slow but at least, it's 
downloading now.. I have disabled both the 'Persistent 
connections (Keep-Alive)' and 'Parse Java files', any help 
on those?
By the way, when I continued after restarting my PC 
with 'Continue interrupted download', the size of the 
downloaded site in my PC decreased significantly (from 
520Mb to 400Mb) and after 8 hours (bytes saved: 250Mb), 
there aren't many new pages added, anything wrong?
Thanks..
Aderlina