[peruser] [Bad file descriptor] Problems with mpm peruser !!

[Taavi]

> I guess what you mean, this vhost is better ?

The virtualhost part is correct, but you still have no right processor 
defined in the peruser configuration. The server environment you use in 
vhosts must have a matching processor defined - so if you use 
"ServerEnvironment experato users", you must have a "Processor experato 
users" line in peruser configuration.

Something like this:
<IfModule mpm_peruser_module>
   MinSpareProcessors 2
   MinProcessors 2
   MaxProcessors 10
   MaxClients 150
   MaxRequestsPerChild 1000
   ExpireTimeout 1800
   # KeepAlive *MUST* be set to off
   KeepAlive Off
   Multiplexer nobody nobody
   Multiplexer nobody nobody
   Multiplexer nobody nobody
   Multiplexer nobody nobody

   Processor experato users
   Processor apache apache
</IfModule>