升级到Ubuntu 13.10-Apache无法启动

我上周末从Ubuntu 13.04更新到Ubuntu 13.10，现在Apache无法启动。在升级之前，它一直运行良好，而且我自己也没有做任何更改。

当我运行重新启动时，这就是我得到的

apache2: Syntax error on line 260 of /etc/apache2/apache2.conf: Could not open configuration file /etc/apache2/conf.d/: No such file or directory

因此，我创建了目录，然后得到了：

 * Starting web server apache2                                                                                                                                      * 
 * The apache2 configtest failed.
Output of config test was:
[Wed Oct 30 11:17:42.921934 2013] [proxy_html:notice] [pid 2496] AH01425: I18n support in mod_proxy_html requires mod_xml2enc. Without it, non-ASCII characters in proxied pages are likely to display incorrectly.
AH00526: Syntax error on line 84 of /etc/apache2/apache2.conf:
Invalid command 'LockFile', perhaps misspelled or defined by a module not included in the server configuration
Action 'configtest' failed.
The Apache error log may have more information.

谢谢！