so today i went to my local bestbuy i purchased 7port usb hub and some other awesome stuff. http://www.bestbuy.ca/catalog/proddetail.asp?logon=&langid=EN&sku_id=0926INGFS10074481&catid=20388 i get home and plug in my 7port high-speed ac powered hub about 40 minutes in i get a message on my mac telling me that a usb hub exceeded a power limit or something. i closed it and unplugged the usb hub and plugged it in again. an hour later i got the message again so i unplugged everything and put my keyboard and mouse back into my 3 iMac ports only to find that my keyboard didnt work. i tried my keyboard in every slot and even in my macbook and it dosent work. i believe that the port short circuited my imac keyboard. what should i do??? should i take the hub and my keyboard to bestbuy and tell them they have to replace both??? im confused about what to do because its an apple keyboard.??? please helllp??????