The first time this happened I though it was something I did. This time, I know I didn't do anything unusual. First time I was in maps, just a few days after the A700 arrived. This time I was in Google's Play Music app, listening to music. Here's what happened: The tablet got rapidly rotated from landscape to portrait and back again a couple of times in quick succession. (I was holding it by both edges in landscape, picked it up to look at some papers that were under it, rotated the screen to portrait in the process, then set the tablet back down, and the screen rotated to landscape again, repeated this about three times). All of a sudden BLACK SCREEN. But the black screen was only in the Music App. The status bar was still on, and I could switch to other apps, the home screen, the app drawer, and even launch new apps, all of them worked normally. But every return to the Music player resulted in a black screen. I couldn't change the song, or even stop the music. (Until I switched to the home screen, then a little miniature headphones appeared in the status bar which I could use to stop the music.) Killed the app via settings, apps, restarted it, still the same black screen. The only thing that fixed it was rebooting the tablet. And that was the only thing that fixed it last time. Any body else seen an app just lose access the screen? Other apps keep working, but that app gets no screen output?