Apache don't accept request

Hi,
I'm using Apache 1.3.31 and PHP Version 4.3.4 on Windows 2000
platform. I have a great problem with Apache server: periodically (one
time in a day) the web server doesn't respond on http request (there
aren't errors in the result page; it's blank and the progress bar
shows download in progress).
In this case all in the computer works well: the memory and cpu usage
are low. The network connections are few (20-30) (checked with netstat
-a).
The logs doesn't report any significant error.
The only way to solve the problem is to restart the Apache server.

Can you suggest any solution?

Thanks in advance
Francesco

Umm.. Check your firewall? What modules do you have enabled? And what PHP
extensions do you use? Do you use apc, turck-mmcache, some zend product or
anything else? Is it a production server? Otherwise I suppose you could do
some debug logging in your scripts..

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> Hi,
> I'm using Apache 1.3.31 and PHP Version 4.3.4 on Windows 2000
> platform. I have a great problem with Apache server: periodically (one
> time in a day) the web server doesn't respond on http request (there
> aren't errors in the result page; it's blank and the progress bar
> shows download in progress).
> In this case all in the computer works well: the memory and cpu usage
> are low. The network connections are few (20-30) (checked with netstat
> -a).
> The logs doesn't report any significant error.
> The only way to solve the problem is to restart the Apache server.
>
> Can you suggest any solution?
>
> Thanks in advance
> Francesco

Hi DvDmanDT,
thank you for your answer.
I don't have installed any kind of optimizer (no apc or turck.mmcache
or zend optimizer). The only extension I have turned on are those of
PHP ini file.

extension=php_curl.dll
extension=php_gettext.dll
extension=php_imap.dll
extension=php_mssql.dll
extension=php_sockets.dll

The firewall is not a problem because when the problem appears I try
to access on web server by LAN address.
I have tried to debug something too, But I haven't found anything yet.
I have written a C++ application to restart apache server when it
blocks. I have noticed the following:
if I try to connect to a simple test html page Apache opens the
connection but the c++ application cannot read the content of the
page. The connection is active endlessly (neither client or Apache
closes the connection after a timeout) until I restart manually the
server. If I try to open another connection Apache responds but, as in
the previous case, never returns the content of html page.

Have you any other ideas?

Thanks in advance
Francesco