Ever since upgrading to .596 GB from Froyo using the two file method, my GPS acquisition has been horrible. Every time I used Google Navigation, it constantly sits there at the "Searching for GPS" screen and never actually proceeds. When using Google maps, it either takes forever or it never locks on to my location. I've rebooted, pulled the battery, and even did a Factory Reset to no avail. Anyone else having this issue? Suggestions?