edit.php is not runing ? Urgent, please help !

Hello there, I have just moved my site to another server. Everything seems to go smoothly, except that I can not run “Manage Posts” page in Admin area as usual. Once, I clicked on it, it just displayed a blank page.

I thought that this could be caused by the short connection time, and I have increased both timeout_connection and default_soket_connection value in PHP already but no effect.

Please help me !

Thank you very much !