I've been maintaining and old Joomla 1.5-based website for my daughter's preschool, Pomme d'Api. It got hacked, I'm not sure how, via FTP or PHP but they basically managed to get 2 .php files on the server that were causing search engine crawlers to get a different version of the site that contained all sorts of links to various pages. It also changed the meta-information such as keywords and description. I've now removed the hack and instructed Google to re-index the site via Google's Webmaster tools, but frustratingly, Google's crawler still hasn't re-indexed the site! It's been over a week since Google last visited it... hopefully providing this link to the website will cause Google to re-index it.