Fresh full battery on both the AC and the RC. Took off and hovered.. like I always do, to check everything out. I saw her drifting away at 8 ft AGL. No problem, I have a little atti practice under my belt. However, this thing seemed to have a mind of its own, going in random directions, and not just drifting with the wind (10mph).. The whole flight lasted about 2 min as I struggled to get her steady and on the ground in one peice. (success)... the flight recorder showed no GPS drop out, and I also looked down at the screen during all of this and it showed P-GPS. ... a little scary. I powered everything down, rebooted, recalibrated compass, and took a second flight. All went well. Prior to this, she has been solid as a rock... a fluke? Edit: I aslo noticed on the flight playback that there was no sattilite image, just a grey screen. I had full GPS lock during the flight.