I love my air, works fast and almost everything is perfect except for some few issues, i hope mac experts here can help me out. a. bluetooth - i dont really get it to work when paired with other devices, for ex samsung or nokia phones, i mean they can be paired but i cant see to access the files when i use browse my device? but bluetooth works well with my wireless keyboard. because of this i use my usb connector when uploading my phone pics to my air. b. usb connector - with my phone connected to the air via usb cable , i can upload my pics, but when i click eject, it doesnt seem to work? ( the warning red ! box appears saying i need to eject it properly . i also tried my my usb drive / usb modem and i cant seem to eject it properly? c.apple wireless keyboard - i bought my keyboard via apple online store, it came with batteries, and yes they were ON when i opened the package, in fact it was kinda hot and i thought the keyboard is defective. so i removed the batteries and put them on again, and sync it with the air on clamshell mode. last week when the standard batteries ran out, i opened the keyboard and i noticed there was some white residue that came off the battery, in fact im not sure if cleaning it is a good idea ??? do i need to turn off bluetooth when im not using the wireless keyboard, or turn the power button of the keyboard off ?