It might be helpful to post a link to your site.
Also, how are you hosting it?
What are your permalink settings?
this is my website http://www.ahmadfitness.com
i am hosting it at HostGator
It seems an issue with the permalinks.
See this for reference:
http://codex.wordpress.org/Settings_General_Screen
I think the problem is with the Arabic script in your URL. Try changing the slug of those pages to a Latin equivalent.
i found the problem on the permalink cause i wrote the name of the page in other language and as default the permalink got the same name, i just changed the permalink to English and everything came alive again, Thank you guys.
