如何调试没有错误信息的错误？

在加载PHP页面时,我在Firefox中收到此错误.

The connection to the server was reset while the page was loading.

它没有表明为什么除了它似乎是Apache崩溃.

Apache错误日志显示：

[Wed Nov 03 10:23:04 2010] [notice] Parent: child process exited with status 3221225477 -- Restarting.

[Wed Nov 03 10:23:06 2010] [notice] Digest: generating secret for digest authentication ...

[Wed Nov 03 10:23:06 2010] [notice] Digest: done

[Wed Nov 03 10:23:06 2010] [notice] Apache/2.2.14 (Win32) DAV/2 mod_autoindex_color PHP/5.3.1 mod_apreq2-20090110/2.7.1 mod_perl/2.0.4 Perl/v5.10.1 configured -- resuming normal operations

[Wed Nov 03 10:23:06 2010] [notice] Server built: Nov 11 2009 14:29:03

[Wed Nov 03 10:23:06 2010] [notice] Parent: Created child process 5100

[Wed Nov 03 10:23:07 2010] [notice] Digest: generating secret for digest authentication ...

[Wed Nov 03 10:23:07 2010] [notice] Digest: done

[Wed Nov 03 10:23:07 2010] [notice] Child 5100: Child process is running

[Wed Nov 03 10:23:07 2010] [notice] Child 5100: Acquired the start mutex.

[Wed Nov 03 10:23:07 2010] [notice] Child 5100: Starting 150 worker threads.

[Wed Nov 03 10:23:07 2010] [notice] Child 5100: Starting thread to listen on port 80.

[Wed Nov 03 10:23:07 2010] [notice] Child 5100: Starting thread to listen on port 80.

我尝试搜索3221225477代码,但发现没有任何工作.

Windows事件查看器也显示：

Faulting application name: httpd.exe, version: 2.2.14.0, time stamp: 0x4aeb9704

Faulting module name: php5ts.dll, version: 5.3.1.0, time stamp: 0x4b06c41d

Exception code: 0xc0000005

Fault offset: 0x00082391

Faulting process id: 0x8f4

Faulting application start time: 0x01cb7b85fa74bf83

Faulting application path: C:\xampp\apache\bin\httpd.exe

Faulting module path: C:\xampp\php\php5ts.dll

Report Id: 73996201-e779-11df-938f-e0cb4e5b154a

当我打电话时发生这种情况：

return mysql_fetch_object($result, $class_name);

当我使用$_SESSION时,它也发生在另一个页面上

如果我切换到使用CGI而不是php5ts.dll和php5apache2_2.dll我得到：

Premature end of script headers: php-cgi.exe

它只发生在一些页面.其他工作正常.

>没有发生PHP错误或异常.错误报告设置为E_ALL& 〜E_NOTICE& 〜E_DEPRECATED. display_errors打开.

>超时设置为60秒,错误页面返回约10秒钟.

>内存使用量约16MB,最大限制为256MB.

> PHP 5.3.1,Windows 7 64bit.

有没有人知道如何有效地调试这个错误？