Thank you James. I solved this problem by changing WordPress address and Blog address in Setting/General as you pointed out. It was http://127.0.0.1/wordpress for both. So, I could see the blog in local machine. But I couldn’t from another computer in the same local network. Now, I replaced 127.0.0.1 to the IP address of the wordpress hosting computer. And it fixed it. I still do not understand completely. But it was big help for me. Thank you again.
