Php-wamp Apache Intermittent suspended animation

Phpwampapacheapache Configuration

Windows under Apache intermittently suspended animation.
Symptom: Three days will stop once, restart Apache and normal again.
Error log:
[Thu 09:59:40] warn the specified network name is no longer available. : Winnt_accept:asynchronous AcceptEx failed.
[Thu 12:03:14] warn the specified network name is no longer available. : Winnt_accept:asynchronous AcceptEx failed.
[Thu Nov 06 12:06:13 2014] [Notice] parent:received shutdown signal--shutting down the server.
[Thu Nov 06 12:06:13 2014] [Notice] Child 65812:exit event signaled. Child process is ending.
[Thu Nov 06 12:06:14 2014] [Notice] Child 65812:released the start mutex
[Thu Nov 06 12:06:43 2014] [Notice] parent:forcing termination of child process 2e8
[Thu Nov 06 12:06:43 2014] [Notice] Apache/2.2.21 (WIN32) php/5.3.10 configured--Resuming normal operations
[Thu Nov 06 12:06:43 2014] [Notice] Server BUILT:SEP 10 2011 11:34:11
[Thu Nov 06 12:06:43 2014] [Notice] parent:created Child Process 80048
[Thu Nov 06 12:06:44 2014] [Notice] Child 80048:child process is running
[Thu Nov 06 12:06:44 2014] [Notice] Child 80048:acquired the start mutex.
[Thu Nov 06 12:06:44 2014] [Notice] Child 80048:starting threads worker.
[Thu Nov 06 12:06:44 2014] [Notice] Child 80048:starting thread to listen on port 80.
[Thu Nov 06 12:14:30 2014] [Warn] Server ran out of threads to serve requests. Consider raising the Threadsperchild setting
[Thu 14:27:32] warn the specified network name is no longer available. : Winnt_accept:asynchronous AcceptEx failed.
[Thu 14:27:32] warn the specified network name is no longer available. : Winnt_accept:asynchronous AcceptEx failed.

.........

[Sun Nov 16:07:37] warn the specified network name is no longer available. : Winnt_accept:asynchronous AcceptEx failed.
[Sun Nov 16:07:38] warn the specified network name is no longer available. : Winnt_accept:asynchronous AcceptEx failed.
[Sun Nov 16:07:38] warn the specified network name is no longer available. : Winnt_accept:asynchronous AcceptEx failed.
[Sun Nov 16:07:38] warn the specified network name is no longer available. : Winnt_accept:asynchronous AcceptEx failed.
[Sun Nov 09 17:05:34 2014] [Notice] parent:received shutdown signal--shutting down the server.
[Sun Nov 09 17:05:34 2014] [Notice] Child 80048:exit event signaled. Child process is ending.
[Sun Nov 09 17:05:35 2014] [Notice] Child 80048:released the start mutex

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