iPhone Clock Bug Prevents Alarm Triggers after New Year's
Sat, January 01st, 2011
Macworld summarizes findings first reported by Engadget. Apparently a bug in the iPhone clock app prevents non-recurring alarms from properly triggering on New Years day.
I was able to confirm this after a couple of false starts. For the bug to show itself, your iOS device must actually tick over from 11:59 p.m. on December 31, 2010 to 12:00 a.m. on January 1, 2011.
The work around for now is to set up the alarm as a recurring event. 9to5Mac claims that the problem corrects itself after January 3rd. In the meanwhile, be aware if you use your iPhone as your alarm clock.