500 error on PHP files

[Rapid2214]

Hello,
I seem to be having a bit of trouble with one of my servers, it cannot process PHP files on all websites returning a 500 error. This problem started at 18:04 yesterday, but my other server (also on the ispconfig configuration) is working fine.
Here is the relivent errors in the apache error log.

[Thu Aug 19 09:53:20 2010] [notice] mod_fcgid: call /var/www/***.com/web/index.php with wrapper /var/www/php-fcgi-scripts/web25/.php-fcgi-starter
suexec policy violation: see suexec log for more details

Also i noted this, in the same log:

[Thu Aug 19 09:53:23 2010] [notice] mod_fcgid: process /var/www/***.com/web/index.php(13677) exit(communication error), terminated by calling exit(), return code: 116

Note: This page has no php scripting in it.

The suphp log folder is empty

root@roy:~# ls /var/log/suphp
root@roy:~#

Also my in my php.ini file '/etc/php5/apache2/php.ini' the engine is switch on for apache

engine = On

Any ideas?

Thanks in advance,

Marty

[Rapid2214]

I think i may have fixed it.
I followed these instruction:

# ls -all /usr/lib/apache2/suexec
-rwsr-xr-- 1 root www-data 13392 Nov 14 22:09 /usr/lib/apache2/suexec
# chown www-data.www-data /usr/lib/apache2/suexec
# chmod 4755 /usr/lib/apache2/suexec

Found here: http://howtoforge.net/forums/showthread.php?t=44351


And all is good

How can i check if PHP files are being excuted by Fast_CGI instead of Suexec?
Answer:Look in 'top' when you are excuting the page, if its php-cgi, it will say it COMMAND.

Sorry for a waste of a tread, but i hope this helps other people who may experience the same problems.


Thanks

Marty