which host are u using ?
i use HOSTING INDIA n it sucks in support
I have checked this forum and also did googled n came to know that most of the cases its solved by setting file permission to 755
still the same problem.
Here are the Log details
[Sun Mar 29 05:54:18 2009] [error] [client 117.195.12.97] File does not exist: /home/marathik/public_html/googlegyaan.com/500.shtml, referer: http://googlegyaan.com/wp-admin/post.php?action=edit&post=19
[Sun Mar 29 05:54:04 2009] [error] [client 117.195.12.97] File does not exist: /home/marathik/public_html/googlegyaan.com/404.shtml, referer: http://googlegyaan.com/wp-admin/post.php?action=edit&post=19
[Sun Mar 29 05:54:04 2009] [error] [client 117.195.12.97] script ‘/home/marathik/public_html/googlegyaan.com/wpage-new.php’ not found or unable to stat, referer: http://googlegyaan.com/wp-admin/post.php?action=edit&post=19