So, I was running the leaked 2.1 for a while (which worked perfectly except for youtube fwiw) and finally decided last week to upgrade to the official 2.1 release. Youtube runs smoothly now and my performance seems slightly faster, but my GPS does not work at ALL. Neither Sprint nor Google Navigation works. I tried turning off the "Use wireless networks" setting and it didn't help at all. Anybody else having this problem? Is there any way to fix this? Am I going to need to re-install my OS? Do I need a replacement phone? Any help would be appreciated.