It appears that the new WindowsCE based Treo 700w had some "issues" with DST.  According to Palm:

"After Daylight Saving Time begins (2:00 a.m., first Sunday in April), you may notice that some appointments in your smartphone's Calendar appear one hour early. For example, if you had scheduled a dental appointment for 9:00 a.m. Monday, it would appear on your smartphone as 8:00 a.m. Monday; it will also appear incorrectly in Outlook on your desktop PC as 8:00 a.m. Monday.

In addition, full-day appointments may appear one day early."

The point?  Well, first off, because I own a Palm OS based Treo 650, I enjoyed having the chance to take a cheap shot at Palm/MS for the 700w's problems.  But beyond that, this issue harkens back to a diary entry by the always suave and debonaire Mr. Tony Carothers.  While dealing with the whole DST protocol seems, on the surface, to be pretty simple, there are always hidden "gotchas" lurking out there that rear their ugly heads every spring and fall.  Remember-- On tap for next year: The U.S. Congress gives the DST Gotcha Tree a healthy shake... anyone else wondering what'll fall out?