Shin pain is back again... what can I change? (Read 328 times)

I've had a history of shin splints/stress fracture.  In 2008 and 2009 the shin pain flared up on the same weekend in January.  I spend a year cautiously building up mileage, placing the blame on doing too much too soon.  My log tells the whole story, but in short, I added mileage every four weeks or so, and never more than 10%, and did little or no speedwork.  In addition, I worked on my form, and have a shorter stride and land somewhere on the fore/mid foot rather than on my heel.  I got through January feeling great and thought I finally had this thing beat.  Then about a week ago, about two hours after a run, I took a step and pain shot through my shin.  Okay, it was an exceptional week and I added 10.5%, but I can't imagine that crossing that fairly arbitrary boundary one time is enough to cause injury. Anyway, it got somewhat better quickly, but I can definitely still feel some mild discomfort on my runs.  I'm planning to take this week off and reevaluate.  I've done a few miles in Vibrams, and don't have any shin pain in those.  Of course, I can't get my 45mpw in wearing those, just yet.

What other changes can I make in the future?  It is incredibly frustrating to get close to where I want to be in training, and then step way back again every year.