AT&T's mad as hell that people are buying its prepaid phones in quantity for the sole purpose of unlocking and reselling them, and it's not going to take it anymore. The megacarrier has filed a lawsuit in Texas targeting so-called phone traffickers who are allegedly sending boatloads of people -- "runners" as they're called -- into AT&T's retail locations to pick up GoPhones and circumvent its per-person purchase limits. To AT&T's credit, the DMCA's exemption on phone unlocking doesn't protect those looking to profit from the sale of unlocked phones, so the lawsuit looks pretty straight on the surface; TracFone has made a killing recently in its legal pursuits, and it turns out that one of TracFone's lawyers is involved with AT&T's case, too, so the defendants might be staring down the barrel of a big ol' fine here. Besides AT&T and TracFone, AT&T's court filing claims that T-Mobile, Virgin Mobile, and Nokia (huh?) have all filed similar lawsuits recently, and the legal team promises there are more in the pipe. Anyway, let's try to keep the GoPhone purchases to under a hundred units a day until this all blows over, okay?