The knee problem is "almost" certainly ITBS. I have to confess that I don't really want to stop the running at the moment as it's taken me so long to lose the weight (5 stone) and my running seems to help me avoid putting weight back on.
I usually try and take each day as it comes so if my knee is sore I don't run. The problem just appeared yesterday and I hadn't ever had problems before. I'm resting today as a result. On the injury forum, bune suggests it could be my sit up technique, so that could be the cause.
As for the name, call me whatever you want, though PPB is how I'll be signing my messages.