I’ve grumbled before about those Levitra ads you get on prime-time TV — the ones where the botoxed brunette is squirming and moaning into the camera. Well, apparently the ads had performance problems. The NY Post reports that GlaxoSmithKline/Schering-Plough, the, ah, firm that markets Levitra in the U.S., are changing their advertising yet again. Drooping sales, I guess.