(Japan) My wife had updated her iPhone to iOS6 and we were using it to go to the next city over. Not only are the stations, trainlines and street names not listed unless you zoom in right on top of them, there are no traffic signals or intersection names.

The font that they chose for the area names is also incredibly wide, which works well for something like "Brooklyn" but not for a name as long as "KakamigaharaHonmachi," which is pretty standard for a Japanese town.

Everyone I've talked to in Japan who has upgraded regrets it.