I downloaded and flashed the leaked MR2 update for my Thunderbolt yesterday evening. I knew that it would wipe my phone, but with everything backed up, I wasn't too worried about that. Here are my results so far: GPS still has trouble locating me indoors, but when it does it is spot on. Outdoors, GPS locks on now in a split second, and so far has not lost a signal outside like mine used to do. My phone used to reboot at least 10 times a day, including at night when I would have it on the charger while I slept. When I woke up this morning, I could tell that it had not rebooted at all. (The way I can tell is I have multiple home startups, and after a reboot, I have to select which Home page I want to use) So far today, there have been no reboots. Usually by this time of morning, I would have had at least a couple of reboots by now. So far so good on that front. 3G signal does seem to be a bit stronger inside my office today. I have been using the mobile hotspot, and have not noticed my hotspot cycling on and off like it used to. Will keep an eye on this as the day goes on. I did not have any problems reloading all of my apps, and Marketplace updated itself to the current version after a few minutes of having installed the new update. I was on WiFi, so not sure if that helped get the correct version of Marketplace back up and running. All in all, other than having all of my data wiped from my phone, which as stated before wasn't that big of a deal, the update seems to have taken care of the rebooting issues I was having, and has definitely made my GPS easier to use. If I encounter any issues during the day, I will update this post.