I'm interested in getting a SPOT also. After a quick read on wikipedia, it looks like SPOT uses a network of satellites called Globalstar (instead of GPS) to communicate with you. Your SPOT has a GPS receiver so it can tell Globalstar your GPS coordinate. More reading showed Globalstar went bankrupt in 2002. Maybe that's why people were having problems. It says Globalstar launched 24 satellites between 2010 to 2013, to bring the network back up to full service. It also says Globalstar began laying off employees in 2011. So looks like there's been alot of turmoil.