How many domains are you running?

[kurgans]

My server works very well with these data

Nombre de cuenta bongostudio

Dominios 239
Subdominios 88
Alias de dominio 6
Cuentas de correo 1250
Cuentas FTP 302
Bases de datos SQL 92
Usuarios SQL 85

Some problems with apache for lack of sockets, but generally works very well
socket.c:2238: REQUIRE(maxfd <= (int)1024) failed.
host: isc_socket_create: not enough free resources