TheOptimizationIdiot - 4:20 am on Mar 9, 2013 (gmt 0)
wow, that's a tough read.
Yours sounds like Panda or Penguin, but we haven't had any official reports of those running.
What's the difference between the 3 pages and the rest? Are they shorter, longer, more list, less list, different template, more links, less links, different topic, shorter title, longer title, different style writing, different or less ads?
Anything, and everything that's different at all, let us know about it, because there has to be something different about those 3 pages than the rest and it might give us thread to pull on or an idea to help you out.
BTW: Welcome to WebmasterWorld
(Sorry you had to join for the reason you did.)