I had the same problem with a Sprint Touch Pro in California. Every time I would acquire a GPS lock it would soft reset. I flashed it to the latest ROM and radio and it seems to work fine with Google Maps and Bing (Windows Live).
new ROM 2.01.651.6
new Radio 1.12.34F
http://www.htc.com/us/SupportDownloa...at=2&dl_id=683
How odd that all of our GPS systems went bonkers at the same time.
Oh and I did run QuickGPS prior to running Google Maps.