I've just gone through my Blog posts and used Broken Link checker to test all the external/internal links from postings. There were a few that have disappeared of the face of the earth and some that just needed updating.
This did cause some traffic on identi.ca as I forgot to temporary disable the WP-Status.net plugin! (Oops AGAIN!) So that's all now finished and I had just over 280 links that I needed to review!:|