[Elecraft] Uncontrolled full volume with NR Firmware 3.27

[Bob Allen]

An odd thing happened today, I was tuning through an area on 20m where I 
have a birdie, about 14.270-14.273.
The noise reduction was on at 1-3 I think, I don't know what state the 
notch filter was at or the noise blanker, as I tuned into this area the 
audio was a bit odd, like screechy, I didn't think to much of that 
because of how the noise reduction works around birdies, but it was 
different than I had heard in the past.
All of a sudden the volume in the headset and the internal speaker went 
to max and turning the volume control had no effect.
I shutdown the radio to avoid damaging things and when I turned it back 
on everything was fine and I can't make it do this again.
Very odd (and painful), wondering if this has happened to anyone else.
Bob
KB1FRW
73