USB lightning cable for iphone 5 by Generic

Owners of the new iPhone 5 are reporting a sticky problem with the new "Lightning" cable used to connect their handsets to power sources or computers sticking in USB sockets.

Lightning is Apple's replacement for its 30-pin connector and terminates in a standard type A USB plug, as featured in USB memory sticks and pictured at left.

The source of the problem seems to be the two small rectangles cut into one side of the USB A plug, with posters reporting they are a little deeper than those in other connectors. That extra depth seems to result in the tines of a USB socket digging in to a depth at which they won't easily slide out.
Some posters say downward pressure, to angle the USB plug down a little, helps to withdraw it from the socket.