After problems generated by connectivity to WiFi networks, it seems like the new ones MacBook Air they have problems with playing video clips, more precisely in some cases the sound start to fluctuate while users watch the videos. On Apple's discussion forums there are quite a few people who report the existence of this problem and it seems that it affects only the models MacBook Air launched this year by the Apple company. The signal fluctuation problem occurs regardless of the applications through which the movies are played, but not every kind of video content generates this problem for users.
Although those at Apple do not know what exactly causes the problem, it seems that the affected MacBooks are kept in the stores by the employees who talk to the people who come to report the problem, they receive a new unit on the spot instead. If you have purchased a MacBook Air new and encounter the same problem, then it would be good to visit the store from which you made the purchase, or better, one of the services authorized by Apple to carry out repairs.
