arungoodboy, Thank you for your reply! I did some digging yesterday and believed it was the wget problem.
Because I installed slackware 12 on an very old laptop with limited space. So I just installed the whole series of a, x, and a couple of packages in series ap,l,n and xap, to make sure saving space. So you can imagine as a newbie in GNU/Linux, how easy to have problems like this

Next time I will look into source more before I asked a question. Thank you!