Since downloading FW version 3.70, acquiring GPS has been quirky. With 3.60 GPS would acquire quickly and stay locked. With 3.70 it seems slower to acquire, and will sometimes lose GPS soon after. If I turn off and restart the 130 that seems to fix it, but I'm a little concerned. I have gone for one ride since downloading 3.70 and that tracked fine. I do regularly plug into the laptop and sync with Garmin Connect.
On a good note, I'm noticing it isn't constantly trying to sync with Garmin Connect, which seems to need a good cell signal to work with. Sometimes my ride starts in an area with poor cell signal and with 3.60 Connect would just work the 130 constantly trying to sync repeatedly. That fix alone should improve battery life.