FC6 httpd Alias/symbolic link

[linuxmaillists at charter.net]

Well I had it working very nicely but it stopped write after 
doing an update.

This is how I set up httpd.conf

<IfModule mod_userdir.c>
    #
    # UserDir is disabled by default since it can confirm 
the presence
    # of a username on the system (depending on home 
directory
    # permissions).
    #
    UserDir "disable"
    #
    # To enable requests to /~user/ to serve the user's 
public_html
    # directory, use this directive instead of "UserDir 
disable":
    # 
    UserDir public_html
</IfModule>

It would open with this in the address bar 
http://localhost/public_html/
and show my files.  now it has a 404 not found error

Here are the files that were updated

Mar 06 05:32:46 Updated: nss.i386 3.11.5-0.6.1.fc6
Mar 06 05:32:55 Updated: evolution-data-server.i386 
1.8.3-2.fc6
Mar 06 05:33:06 Updated: docbook-style-xsl.noarch 
1.72.0-1.fc6
Mar 06 05:33:07 Updated: nss-devel.i386 3.11.5-0.6.1.fc6
Mar 06 05:33:07 Erased: evolution-data-server-devel
Mar 06 05:33:11 Updated: evolution-data-server-devel.i386 
1.8.3-2.fc6
Mar 06 05:33:12 Updated: nss-tools.i386 3.11.5-0.6.1.fc6
Mar 06 05:33:20 Updated: phpMyAdmin.noarch 2.10.0.2-1.fc6
Mar 06 05:33:23 Updated: kernel-headers.i386 
2.6.19-1.2911.6.5.fc6
Mar 06 05:33:41 Installed: kernel-devel.i686 
2.6.19-1.2911.6.5.fc6
Mar 06 05:33:58 Installed: kernel.i686 2.6.19-1.2911.6.5.fc6

Could any of them have changed something to cause Apache to 
stop finding my home directory?

I have no clue what to look for now.