apache 无法启动

[Sun Aug 23 09:18:39 2009] [notice] Digest: generating secret for digest authentication ...
[Sun Aug 23 09:18:39 2009] [notice] Digest: done
[Sun Aug 23 09:18:41 2009] [notice] Apache/2.2.12 (Win32) DAV/2 mod_ssl/2.2.12 OpenSSL/0.9.8k mod_autoindex_color PHP/5.3.0 mod_perl/2.0.4 Perl/v5.10.0 configured -- resuming normal operations
[Sun Aug 23 09:18:41 2009] [notice] Server built: Jul 22 2009 11:35:54
[Sun Aug 23 09:18:41 2009] [crit] (22)Invalid argument: Parent: Failed to create the child process.
[Sun Aug 23 09:18:41 2009] [crit] master_main: create child process failed. Exiting.
[Sun Aug 23 09:18:41 2009] [notice] Parent: Child process exited successfully.
[Sun Aug 23 09:19:07 2009] [notice] Digest: generating secret for digest authentication ...
[Sun Aug 23 09:19:07 2009] [notice] Digest: done
[Sun Aug 23 09:19:09 2009] [notice] Apache/2.2.12 (Win32) DAV/2 mod_ssl/2.2.12 OpenSSL/0.9.8k mod_autoindex_color PHP/5.3.0 mod_perl/2.0.4 Perl/v5.10.0 configured -- resuming normal operations
[Sun Aug 23 09:19:09 2009] [notice] Server built: Jul 22 2009 11:35:54
[Sun Aug 23 09:19:09 2009] [crit] (22)Invalid argument: Parent: Failed to create the child process.
[Sun Aug 23 09:19:09 2009] [crit] master_main: create child process failed. Exiting.
[Sun Aug 23 09:19:09 2009] [notice] Parent: Child process exited successfully.
[Sun Aug 23 09:30:22 2009] [notice] Digest: generating secret for digest authentication ...
[Sun Aug 23 09:30:22 2009] [notice] Digest: done
[Sun Aug 23 09:30:24 2009] [notice] Apache/2.2.12 (Win32) DAV/2 mod_ssl/2.2.12 OpenSSL/0.9.8k mod_autoindex_color PHP/5.3.0 mod_perl/2.0.4 Perl/v5.10.0 configured -- resuming normal operations
[Sun Aug 23 09:30:24 2009] [notice] Server built: Jul 22 2009 11:35:54
[Sun Aug 23 09:30:24 2009] [crit] (22)Invalid argument: Parent: Failed to create the child process.
[Sun Aug 23 09:30:24 2009] [crit] master_main: create child process failed. Exiting.
[Sun Aug 23 09:30:51 2009] [notice] Parent: Forcing termination of child process 36
[Sun Aug 23 10:22:28 2009] [notice] Digest: generating secret for digest authentication ...
[Sun Aug 23 10:22:28 2009] [notice] Digest: done
[Sun Aug 23 10:22:30 2009] [notice] Apache/2.2.12 (Win32) DAV/2 mod_ssl/2.2.12 OpenSSL/0.9.8k mod_autoindex_color PHP/5.3.0 mod_perl/2.0.4 Perl/v5.10.0 configured -- resuming normal operations
[Sun Aug 23 10:22:30 2009] [notice] Server built: Jul 22 2009 11:35:54
[Sun Aug 23 10:22:30 2009] [crit] (22)Invalid argument: Parent: Failed to create the child process.
[Sun Aug 23 10:22:30 2009] [crit] master_main: create child process failed. Exiting.
[Sun Aug 23 10:23:00 2009] [notice] Parent: Forcing termination of child process 36
这是错误日志，跪求高手解答~