Hello, I run about 12 apache2 httpd server with php5.3 All are running well, but randomly I get the error message, that the "/index.php is not found. /var/log/apache2/error_log: [Wed Aug 22 10:29:57 2012] [error] [client xx.xx.xx.xx] File does not exist: /index.php?site-id=5 The File (index.php) is delivered via this httpd about 100.000 times a day, but randomly (between 0 and 40 times a day) the message appears in the error_log. I don't know if the client gets an error and I can't (or have no idea howto) reproduce this behavior. I checked the Limits on the system for the max open files: The fs.file-max is set to 188155 (/proc/sys/fs/file-max). The hard limit for max open files for the user www-run is 8192, and the soft limit is 1024. I checked via sysstat (sar) the open files from the entire system, at this time about 1000 files were open. The underlaying filesystem is ext3. OS: SLES11SP2 Apache Version is: apache2-prefork-2.2.12 All Servers running in ESX/ESXi environment with latest vmware tools installed. Does anyone has an idea what the problem can be, or where to search? Thanks Meike --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx