尝试配置新符号2时出现问题

我尝试转到http://localhost/Symfony/web/config，然后单击"配置你的符号应用程序"，然后我得到以下错误：

No data received
Unable to load the webpage because the server sent no data.
Here are some suggestions:
Reload this webpage later.
Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without sending any data.

知道我应该如何调试这个吗？我正在OS X Mountain Lion、apache2和PHP 5.4.6 上测试这一点

在我的日志中，我看到了以下内容：

[Tue Aug 28 00:59:29 2012] [error] [client 127.0.0.1] File does not exist: /Library/WebServer/Documents/favicon.ico
[Tue Aug 28 00:59:51 2012] [notice] child pid 27878 exit signal Segmentation fault (11)
[Tue Aug 28 00:59:52 2012] [notice] child pid 27877 exit signal Segmentation fault (11)
[Tue Aug 28 00:59:52 2012] [notice] child pid 27875 exit signal Bus error (10)
[Tue Aug 28 01:00:10 2012] [notice] child pid 27879 exit signal Bus error (10)
[Tue Aug 28 01:00:14 2012] [notice] child pid 27882 exit signal Segmentation fault (11)
[Tue Aug 28 01:00:20 2012] [error] [client 127.0.0.1] File does not exist: /Library/WebServer/Documents/favicon.ico
[Tue Aug 28 01:00:23 2012] [notice] child pid 27883 exit signal Bus error (10)
[Tue Aug 28 01:00:24 2012] [notice] child pid 27884 exit signal Segmentation fault (11)
[Tue Aug 28 01:00:26 2012] [notice] child pid 27885 exit signal Segmentation fault (11)
[Tue Aug 28 01:01:09 2012] [notice] child pid 27889 exit signal Segmentation fault (11)
[Tue Aug 28 01:01:09 2012] [error] [client 127.0.0.1] File does not exist: /Library/WebServer/Documents/favicon.ico
[Tue Aug 28 01:01:15 2012] [notice] child pid 27892 exit signal Segmentation fault (11)
[Tue Aug 28 01:01:16 2012] [notice] child pid 27893 exit signal Segmentation fault (11)
[Tue Aug 28 01:01:20 2012] [notice] child pid 27894 exit signal Segmentation fault (11)