i've spent the last two months dealing with P.F. I came off from running some really quality winter mileage with severe pain in my foot. Since then I have read every thread there is about P.F. on letsrun and this is what I took away and what has helped me tremendously:
1) Strassburg sock (or if you do not wish to spend the 40-50$ I found what works equally as well is sleeping with pants that have the elastic at the bottoms and having it go around your heel and then all your toes, thus pullung your foot up in the flexed position, similar to what the strassburg does.
2) Foam roll your calves. eventually working up to using a nalgene in place of the foam roller.
3) Icing. Freeze a water bottle. use a bag of ice.
4) Ibuprofin
5) Pull your toes toward your shin and massage the thin band running along the inside arch
6) in class or whenever your sitting, roll a golf ball on your arch and heel
7) orthodics (plain dr. scholls)
This is what has helped me in a span of a month and a half go from no running to 50mpw. I hope this helps the rest of you with this bull sh1t injury.
Also, for those of you who do have orthodics and seem to have gotten something out of them, do you actually run with them on or just in your normal casual shoes? An answer would be appreciated.