The problem with inadequate supplies of ultra-portable notebook with the Windows operating system can last for 2012, as related to the insufficient production of aluminum enclosures for them. It is reported by news agency DigiTimes. Currently, the largest manufacturers of aluminum panels for notebooks is Foxconn's and Catcher, but they are fully loaded with orders for at least the end of 2011, while the MacBook Air analogues require additional production. This fact negatively affects the supply of Acer Aspire S3, Lenovo IdeaPad U300s and Toshiba Portege Z830. Already it is known that the challenges facing the company Acer, which has in its range not only ultra-compact model with an aluminum body, but also a number of other models which are necessary for aluminum body parts. At the same time, ASUS gets aluminum parts from BYD, so its UX series models should be delivered without delay. On the other hand plans on entering the market ultrabukov consider Dell and HP, but nothing precise about these plans is unknown and the model will be submitted no earlier than 2012. For its part, aluminum parts manufacturers are making efforts to increase production for the last few months have made progress. But enough of them to ensure that all interested persons to compete with the MacBook Air - it is not clear.