Oil prices are falling again, unable to mount a sustained rally on renewed Libyan oil output problems, in the face of an ever stronger dollar. The pound sterling is making back much of its Scotland damage, but the yen and euro keep falling versus the greenback. The oil market, of course, also continues to deal with relative oversupply. OPEC gave mixed messages this week on their willingness to fight the price slide with production cutbacks. The weekly inventory report in the US also showed a strong rise in crude oil imports and a large inventory increase.