Motorola Adventure V750

did someone already have a problem with bluetooth intermittent . sometime the connection between the v750 and the headset is loosing connection and after 10 seconde it reconnect itself to the phone it can do that problem maybe 10-20 time a day, i tried 3 different headset , they changed the phone for a new one, and i still have the same problem. i want to know if one of you already have that kind problem