yes, I did that. was I changing it in the right place - Edit Profile?
Yes that's the right place.
I asked because I've forgotten about that Submit button in the past.
I just tried to make a change (add a signiture) by way of a test.
Clicking Submit gave me this message:
It does not appear this was submitted from the proper form.
So there may be something similar going on with the password -- possibly some bug that crept in after the last forum software update.