Error : When access the wp-admin and it shows blank page or 500 internal error and server logs shows following error ..
/usr/bin/php: symbol lookup error: /usr/local/lib/php/extensions/no-debug-non-zts-20060613/suhosin.so: undefined symbol: zend_atol
[Sun Jan 30 11:07:08 2011] [error] [client] Premature end of script headers: /home/username/public_html/wp-admin/index.php
Solution :
This problem due the php update or wordpress update. The only works when you enable suhosin.simulation for the account instead of disabling suhosin on the server.
You need to disable the suhosin
open php.ini file
extension="suhosin.so"
chnage to
;extension="suhosin.so"
and add the following line
suhosin.simulation On
Save the file and try to access the wp-admin.
done








