"usb device was drawing too much power" error message Ever since I upgraded to Lion, I've been getting this error message a lot. It seems to trigger(not every time though) when I plug in my iPhone to the usb port on my keyboard.

The only other USB device that's connected to my brand new 27" iMac is my printer. I'm using a Magic Mouse. I've never had this problem before prior to upgrading to Lion. What's causing it how do I make it go away?
If you plug your iPhone with your keyboard the total power requested by you keyboard (i.e. iphone + keyboard) is too high for the usb to handle. I suggest you plug your iphone directly to your iMac.