请教：apache 2.2配置个人用户拒绝访问

ruger

OS：Linux localhost.localdomain 2.6.16.1 #2 SMP Tue Jun 27 21:08:42 CST 2006 i686 i686 i386 GNU/Linux
apache 版本：2.2
问题：给每个用户配置个人网站时，按照规定
#  UserDir disable
UserDir public_html
<Directory /home/*/public_html>
    AllowOverride FileInfo AuthConfig Limit
    Options MultiViews Indexes SymLinksIfOwnerMatch IncludesNoExec
    <Limit GET POST OPTIONS>
        Order allow,deny
        Allow from all
    </Limit>
    <LimitExcept GET POST OPTIONS>
        Order deny,allow
        Deny from all
    </LimitExcept>
</Directory>
在每个用户下面建public_html，下面建权限全部改成755，但是http://localhost/~用户名时，出现错误，如下：
Forbidden

You don't have permission to access /~ben/ on this server.

Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.2.0 (Fedora) Server at localhost Port 80
大家帮忙解决一下啊，应该不是很麻烦吧？