WordPress Site Hacked?

I’ve had a few sites hacked in the past (mostly through insecure hosts) and now employ usual safeguards wp-security, limit logins etc..

However – this one is new to me so welcome any guidance

http://webcache.googleusercontent.com/search?q=cache:R36wemcVn1QJ:www.e-bbrewerylofts.com/detroit-property-prices.html/detroit-skyline+&cd=15&hl=en&ct=clnk&gl=uk

At the bottom of the site is showing sex, porn content etc.

Looking at the site I can’t see any of this or indeed where it’s coming from – a look at the database posts table doesn’t show anything either.

Maybe it’s coming via a dodgy plugin – the ones I’m using are:

Akismet
Deactivate | Edit | Settings
Used by millions, Akismet is quite possibly the best way in the world to protect your blog from comment and trackback spam. It keeps your site protected from spam even while you sleep. To get started: 1) Click the “Activate” link to the left of this description, 2) Sign up for an Akismet API key, and 3) Go to your Akismet configuration page, and save your API key.

Version 2.5.6 | By Automattic | Visit plugin site
Select Genesis Simple Hooks
Genesis Simple Hooks
Deactivate | Edit
Genesis Simple Hooks allows you easy access to the 50+ Action Hooks in the Genesis Theme.

Version 1.8.0.2 | By Nathan Rice | Visit plugin site
Select Google Analytics for WordPress
Google Analytics for WordPress
Settings | Deactivate | Edit
This plugin makes it simple to add Google Analytics to your WordPress blog, adding lots of features, eg. custom variables and automatic clickout and download tracking.

Version 4.2.4 | By Joost de Valk | Visit plugin site
Select Google XML Sitemaps
Google XML Sitemaps
Deactivate | Edit
This plugin will generate a special XML sitemap which will help search engines like Google, Yahoo, Bing and Ask.com to better index your blog.

Version 3.2.7 | By Arne Brachhold | Visit plugin site | Settings | FAQ | Support | Donate
Select LinkSync
LinkSync
Activate | Edit | Delete
Easily synchronise the links list on multiple blogs with one central site.

Version 4.3.48f | By dcoda | Visit plugin site
Select OPML Importer
OPML Importer
Deactivate | Edit
Import links in OPML format.

Version 0.2 | By wordpressdotorg | Visit plugin site
Select Simple 301 Redirects
Simple 301 Redirects
Deactivate | Edit
Create a list of URLs that you would like to 301 redirect to another page or site

Version 1.03 | By Scott Nellé | Visit plugin site
Select WordPress Database Backup
WordPress Database Backup
Deactivate | Edit
On-demand backup of your WordPress database. Navigate to Tools → Backup to get started.

Version 2.2.3 | By Austin Matzko | Visit plugin site
Select WP-Cumulus
WP-Cumulus
Deactivate | Edit
Flash based Tag Cloud for WordPress

Version 1.23 | By Roy Tanck | Visit plugin site
Select WP Security Scan
WP Security Scan
Deactivate | Edit | Settings
Perform security scan of WordPress installation.

Version 3.0.9 | By WebsiteDefender | Visit plugin site

Welcome any comments / help.

Thanks