Apache2 Hangs The VPS Up

I have a problem. When MSN Search robot looks through my VPS, the machine is going "asleep", e.g. Apache2 (Port 80) doesn't answer at all. Here is the last falling:

Code:
23:14:15 up 4 days, 9:06, 5 users, load average: 37.18, 31.25, 27.46
I hardly ever can enter 'pkill apache2' to kill Apache2 processes. Here is my Apache2 configuration (timeouts, prefork, e.g.):

Code:
Timeout 30
KeepAlive On
MaxKeepAliveRequests 20
KeepAliveTimeout 5

<IfModule mpm_prefork_module>
StartServers 2
MinSpareServers 2
MaxSpareServers 5
MaxClients 10
MaxRequestsPerChild 400
</IfModule>

Maybe I configured Apache2 wrongly, but I only want to prevent this bad thing.