Problems encountered

When I installed it on my local computer, it worked fine. what I did is following
1. unzip Drupal-6.13 to Htdocs
2. unzip language pack to overwrite the original file
3. install (choose Chinese Simplified)
and everything was OK. I have a perfect Drupal site in Chinese on my computer

When I try to install it to my host, I felt. During installing, it said some translation related problems encountered. I still continue and it did finish installation. But now half of the website is still English.
see what this menu look like (attched 1.jpg ) then you'll understand what I am saying.

Any one has a clue? Thank you very much.