Citing a bizarre bug in a batch of bad phones, two of the United States' largest mobile carriers, Cingular and T-Mobile, have stopped selling Motorola's hot RAZR cell phone. First introduced in 2004, the RAZR has sold more than 12 million units and is known for its edgy style and thin form factor. But a curious bug in GSM versions of the phone (i.e., those versions that are sold only in the United States) has had mobile carriers fuming since earlier this month. Finally, both Cingular and T-Mobile had to stop selling the phone while they figured out which ones were bad. Motorola says it hopes to begin selling the phones again in the United States soon. Hey, give me a call when that happens