Boston promoted him directly from Double-A, which was a mistake, and now they've promoted Craig Hansen(who's minor league numbers are deceptively mediocre). Lester probably isn't far away. I know the pitching staff has had injury issues, but Boston isn't going to help themselves down the line by throwing a bunch of guys who aren't ready yet into the fire.
Also, Papelbon is being wasted in the pen. Not to use an Oakleyistic exaggeration here, but if he's not a starter by the end of next year, criminal charges should be filed.