Hi. Using Apache version 2.2.3 on a VPS, my webpages are very slow and I get this error messages on my 'error_log' file: --------------------- [Wed Mar 26 13:05:39 2008] [warn-phpd] mmap cache can't open /var/www/vhosts/foo.com/httpdocs/classes/Threads.php - Too many open files (pid 17650) [Wed Mar 26 13:05:42 2008] [warn-phpd] mmap cache can't open /var/www/vhosts/foo.com/httpdocs/classes/User.php - Too many open files (pid 17650) [Wed Mar 26 13:05:46 2008] [warn-phpd] mmap cache can't open /var/www/vhosts/foo.com/httpdocs/lib/Functions.php - Too many open files (pid 17650) --------------------- Some data of my server: --------------------- []# free -m total used free shared buffers cached Mem: 2693 267 2425 0 0 0 -/+ buffers/cache: 267 2425 Swap: 0 0 0 []# ulimit -m unlimited --------------------- As you see, my Host provider gave me a VPS server with Swap=0. I've got PHP 5.2.5 and APC (a Cache System) 3.0.17. Any similar experience? Thank you very much.