I just realised my X has been quiet all day despite emails arriving...

A quick check shows no sound output at all. Checked volume in settings, ambiences and from the volume key.

I saw this previously on the community build, but this is the first time it's happened since the official build arrived.

I use sailcron to switch to a silent ambience overnight and back to a noisy one in the morning. It certainly switched back to 'noisy', and the 'muted' icon wasn't shown.

Back to normal after a reboot.

Next time I will check the phone audio, and anything else I can think of. Anyone had anything similar?