I've got nothing of the sort on my Nuvi 1300. When I create a new route on GPS device and enter a new end point (a random town in Greece), it's not written neither Greece nor "ΕΛΛAΔΑ". If I type Lamia, it's offered as Lamia (Fthiotidos), all in latin character. If I type Patra, it's offered as Patra (Achaias). It's all in latin characters. No problem at all with Greek letters.