[sowbug]

It's not so much a bug as defective by design:

1. Have guests over.

2. Want to play music.

3. Get out phone.

4. Launch Sonos app.

5. "Hi, we think now would be a great time to update the firmware on your Sonos devices. We could have done this at any time during the last two weeks since you used any of your Sonos devices, but your time is worthless to us, so we'll make you babysit the update for the next 5 minutes. Hope you weren't launching the app because you wanted to play music right now."

At a minimum they should have the decency to launch the app-store review flow during this forced delay so that they'd have some public recognition of the supreme annoyance this process causes.