Is there really such a thing as too much signal strength? For residents of Tsushima in Japan, the answer is a solid "yes." Folks in the area are a mere 33 miles from the South Korean shore, and NTT DoCoMo customers with international roaming enabled are finding themselves roaming on those powerful airwaves across the Korea Strait -- naturally leading to some rather unpleasant charges. The carrier reports that 38 models are affected by the problem (presumably every handset that's capable of roaming in South Korea), and unfortunately, their only solution is to have affected customers manually configure their phones to use the local network. It'd be awesome if they just juiced the towers to be, like, ten times more powerful, but we suppose that maybe that's not the healthy thing to do.