nginx + apache2 + wordpress configuration ?

Here's what out configuration looks like to serve an app named 'wp3' for 'username' on 'domain.com/blog':

Front-end nginx:

server {
    listen       174.121.79.152:80;
    server_tokens off;

    proxy_set_header  Host             $host;
    proxy_set_header  X-Forwarded-For  $remote_addr;

    server_name  domain.com;

    location /blog/ {
        proxy_pass  http://localhost:2480;
    }

    location = /blog {
        proxy_pass  http://localhost:2480;
    }

    access_log  /home/username/logs/frontend/access_wpsite.log combined;
    error_log   /home/username/logs/frontend/error_wpsite.log info;
}

Back-end Apache on port 2480:

<VirtualHost 127.0.0.1:2480>
  BrowserMatch "^gnome-vfs" redirect-carefully
  BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully
  SuexecUserGroup username username
  ServerName domain.com
  AddHandler cgi-script .cgi .py
  AddOutputFilter INCLUDES .shtml
  AddType text/html .shtml
  DirectoryIndex index.html index.htm index.cgi index.py index.php index.spy nph-index.cgi index.shtml
  DocumentRoot /home/username/webapps/_
  ProxyPreserveHost on
  RewriteEngine on

  <Directory /home/username>
    AllowOverride all
  </Directory>

  Alias /cgi-bin/php52.cgi /home/php-cgi/php52.cgi
  Alias /cgi-bin/php52.fcgi /home/php-cgi/php52.fcgi
  Alias /cgi-bin/php52-fcgi1.fcgi /home/php-cgi/php52.fcgi
  Alias /cgi-bin/php52-fcgi2.fcgi /home/php-cgi/php52-fcgi2.fcgi
  Alias /cgi-bin/php52-fcgi3.fcgi /home/php-cgi/php52-fcgi3.fcgi
  Alias /cgi-bin/php52-fcgi4.fcgi /home/php-cgi/php52-fcgi4.fcgi
  Alias /cgi-bin/php52-fcgi5.fcgi /home/php-cgi/php52-fcgi5.fcgi
  Alias /cgi-bin/php52-fcgi6.fcgi /home/php-cgi/php52-fcgi6.fcgi
  AddHandler php52-cgi .php
  AddHandler fastcgi-script .fcgi
  Action php52-cgi /cgi-bin/php52.cgi
  Action php52-fcgi /cgi-bin/php52.fcgi
  Action php52-fcgi1 /cgi-bin/php52-fcgi1.fcgi
  Action php52-fcgi2 /cgi-bin/php52-fcgi2.fcgi
  Action php52-fcgi3 /cgi-bin/php52-fcgi3.fcgi
  Action php52-fcgi4 /cgi-bin/php52-fcgi4.fcgi
  Action php52-fcgi5 /cgi-bin/php52-fcgi5.fcgi
  Action php52-fcgi6 /cgi-bin/php52-fcgi6.fcgi

  <Location "/cgi-bin/php.fcgi">
     Order Deny,Allow
     Deny from All  
     Allow from env=REDIRECT_STATUS
     Options ExecCGI
     SetHandler fastcgi-script
  </Location>

  <Location "/php.ini">
     Deny from All
  </Location>

  SetEnvIf Request_URI /blog PHP_INI_SCAN_DIR=/home/username/webapps/wp3
  Alias /blog /home/username/webapps/wp3/
  LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
  LogFormat "%t %a %D %I %O %s %{Content-Type}o %{Host}i \"%r\" \"%{Referer}i\"" host
  CustomLog /home/username/logs/frontend/access_wpsite_php.log combined
  Errorlog /home/username/logs/frontend/error_wpsite_php.log
</VirtualHost>

Hope that helps!