as far as still ringing b/c it is connected to external power....

I would agree if that is what had been happening all along, but this is weird new quirk that just popped up.

And it is not consistent... sometimes it just vibrates, the next day it rings in Silent Mode.

For me the Silent Ringer option is as fiddly as the Vibe Only choice b/c you have to go to Prefs and select it instead of just one button.

I know, I must be high-maintenance. I want the phone to shut up and alarms to go off at work.... without having to click through Prefs to do it!