The problem with TomTom devices that have no or a poor gps signal can be received, is caused by a ‘leap year bug’. A fix is not there yet, although a reset of the device, the problem to temporarily resolve.
TomTom users 
“We are working hard on a solution,” says a TomTom spokesman Wouter Glaser. “More I can not currently say.” On his site, which gives TomTom later on Tuesday with more details to come, but if there is already a software update is available, it is not yet known. According to TomTom customers have indicated that a reset of the device, the problem to temporarily resolve.
Exactly what the problem is, is unclear. Gps navigation leans on time; on the basis of the delay of the signal from different navigation satellites, the position of a user is determined. When the tijdafhandeling of a device is disturbed, it is therefore obvious that the device is in the war can get lost. The year 2012 is a leap year; march is the first month following the schrikkelmaand February and may was therefore on the 31st of march, something wrong.