Check how many processes Apache has running. It may be that some scripts are not shutting down after the connection has dropped, or the connections are not being dropped from the client(s), resulting in an exhaustion of resources. I think you can set a connection time-out so that connections are automatically dropped after some period of inactivity. You should also be able to increase the number of allowed connections in the Apache configuration files. I'm just getting started in a new job where this is information I need to learn, but I am not there yet, so this is as far as I can take you.
rubberman
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