I'm having the same problem. After a day or two, the data stops flowing and I need restart the gateway.

Versions:
McGateway 110:
GwVersion: 0.9-958
LpLanVersion: 0.9-615
McModule 110:
Version: not sure, but probably 0.9-615 as I updated everthing at the same time and I see 0.9.615 in my download/mcthings folde but the devices tool shows 0 for version.

Any way we can fix this?