Is there a tool out there that will crawl one of your friend's status updates and download them to a file? I'm doing some research and it's a pain to keep hitting "older posts.."
You may want to look at the questions on StackOverflow about the Facebook Graph API. Your solution for instance, may involve something like wget and a URL of the form (or similar): https://graph.facebook.com/USERNAME_HERE/feed.
In fact by examining the bottom previous/next links from this page, I can see that adding a query similar to
?limit=25 and perhaps even
&since=2011-02-09T04 may be just what you need.
It's a Perl script that will insert wall posts, user information, and friends into a MySQL database. From there you can sift through the data using MySQL
SELECT statements. It doesn't make any API calls, so if you can see it on Facebook, fb-crawl can get it.