iOS 4.1: Repeating alarms may trigger incorrectly before or after DST change

Products Affected

iPhone 3G, iPhone 3GS, iPhone 4, iPod touch (2nd generation), iPod touch (3rd generation), iPod touch (4th generation)

Symptoms

In some regions, shortly before or after the daylight saving time (DST) change, repeating alarms created in the Clock app may work incorrectly.

Resolution

To resolve this behavior for existing alarms, set the repeat interval to Never. You will need to reset these alarms for each day you need them.

After November 7th, 2010, you can set your alarms to repeat again.

This document will be updated as more information becomes available.
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