Android: problem when running gps and gprs at the same time: the connection is broken?

Question

satellite navigation

When I receive GPS coordinates, the socket connection is broken. The same for wi-fi.

Reproducible on Samsung galaxy i9000(Android version: 2.3.4)
Not reproducible on phone: LG P500(Android version: 2.3.3)
Code to get coordinates (run in main thread):

private final long MIN_TIME = 60000;
private final long MIN_DISTANCE = 10;

_locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);

try {
_locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, MIN_TIME, MIN_DISTANCE, _gpsListener);
} catch (Exception e) {
System.out.println(e.toString());
}

Socket creation code (Run in a separate service):
_socket = new Socket();
_socket.setSoTimeout(200);
InetSocketAddress sockaddr = new InetSocketAddress(_ip, _port);
_socket.connect(sockaddr, 4000);

Someone faced a similar problem?
Is it related to the version of android or hardware?