Daylight Saving time change?

Hi all, This seems really silly, but Daylight Saving time is ended, and I can't work out how to get my computer to notice. I thought it would have just known, as has happened in the past, but it's still concienciously showing MDT time rather than MST. I tried to use Yast to correct this, and the only thing on offer to me are other major timezones, nothing for Daylight saving. It might be part of the puzzle, though I don't quite see how, that I run an ntp client (because my laptop's clock is dreadfully inaccurate--I suspect a failing CMOS support battery or something). Any suggestions? Cheers, Simon "You can tell whether a man is clever by his answers. You can tell whether a man is wise by his questions." — Naguib Mahfouz