Please go to the development thread MarvelUSc. Simon has posted regarding this issue. I have someone sending me their phone with such issue. In coming week or so, I will:
1] fix this guy's phone
2] document how I fixed it
3] include downloads to appropriate RUUs... the one referenced abov4 is Virgin Mobile Canada [which is gsm]
So stay tuned to that thread [ref:http://forum.xda-developers.com/show....php?t=1432425]for fix.
Did you everg et that phone and figure out how to fix the 3 times vibrating issue?
I was reading through the thread you have posted above but could not find anything.