I had with the device, the same problems that have been described by other customers here. On the one hand the device itself: The initial search for the GPS signal has very, lasted very long and during the trip it was also free train constantly lost. (Or to have the Navi believes found it) is then found time for a brief moment surprised it a with messages like "Turn now left in XXX-road" even though you are in the middle of the highway and it at all in any of the neighboring villages the XXX-street would. In addition, it has remained just hang in two tests, which was noticed only by the fact that there was no challenge to the exit. Since there was only the current route to exit and restart from the current position.
The software for the PC behaved like to read in some users is: There were reportedly found updates, but if you want to download them it is said that there were none available. A change of the browser, as well as an exception in the firewall not alter the fact.
After four days of continuous testing and trial and error the Navi declined.
Probably, these were a defective copy. I will not deny. But since I am apparently not the only one who has received such (but considering the circumstances here) one of many, I still forgive only one star, because that does not speak for very good quality assurance measures in the home TomTom.