Now it seems that other people are staring to encounter this dangerous problem. A post form a MacBook pro user in a forum message, explains that his magsafe started to burn and melt while he was using the notebook computer in bed.

Maybe it’s time for Apple to issue a recall on the magsafe connectors for the MacBook Pros?

This seems to be a severe case of the problem, as the swelling is very significant. The Apple MacBook Pro in the picture cannot run on battery alone any longer, as it shuts down when the battery swells out more. Other, non-severe cases do not seem affect the MacBooks as much. However, there have been reports of keyboard and/or trackpad functionality sometimes being affected, due to the components being pushed on by the swollen battery casing.

Apple is replacing these defective batteries on an individual basis.

Source: MacFixIt