I wish I had anything to help you. I went through a whole 160 game season, and though I had some complaints, that certainly wasn't one of them. The only reason I respond is that my son has been bothering me constantly over the last week regarding his LL draft. PB makes a point of stating the you should clear your cache quite often during the draft, and possibly that might be related. I'm no computer geek, so I don't know all the why's & wherefore's, but you might be having some sort of browser conflict that is telling PB to use some "old" roster....
Just a thought, in case nobody with more than 1/10 of a clue tells you the REAL truth :-), whatever that might be.....