Every get into one of those moods where you ask "why"? Why is there a setting for DST when you have selected auto clock? Why does the setting for DST still work when you have set a manual clock? Stupid questions, I know.
And if you get time from the PSIP, shouldn't that set the clock?
Anybody from AZ or HI with a comment?
With clock set to off, my 515H DST turned off as expected. On 3/4/12 it will switch again. I have faith.