A reported bug with the iPhone has seen thousands of people sleeping in.
The glitch, reported by users of the iPhone, affects one time alarms, which fail to go off.
Thousands of people have taken to blogs, twitter and other social media to vent their anger about the problem.
It is the second time the bug has struck the popular device, which was first reported in early November.
iPhone owners can fix the problem by using the re-occurring alarm function.
