Sgt_Kickaxe - 7:11 am on Nov 11, 2012 (gmt 0)
Redirects in general might be a problem if Google has changed how they handle them, or at least how they weight them, because many an affiliate use them. In general an article or a story won't be reached via redirect but affiliate links will be and Google's gone to great lengths on removing affiliates from top positions lately, perhaps even with Panda?
I don't know for sure but I do see a lot of "not included" results in GWT on sites that employ 301 or 302 redirects. Google doesn't specify those urls but I'd be willing to bet they are the "jump" urls.
I'm off to do some testing, you're not the first to wonder about a change in redirect reporting.