need help with Gps Gate

[prethum]

i am have installed tom tom 7 on my samsung i900 and gpsgate 2.6 and after struggling for a while i got the green signal on my gps gate saying data with position i used tom tom for two days then suddenly when i start tom tom it says NO GPS DEVICE AND I WENT TO CHECK ON GPS GATE AND THE SIGNAL TURNED YELLOW AND IT SAYS DATA WITH NO POSITION RUNNINK OK

PLZ CAN SOME ONE HELP
THANK YOU IN ADVANCE