I got my Evo today, finally. I noticed when I plug in the usb cord to my computer, no matter what I set it at (charge only, mount hard drive, etc....) the computer makes the noise like i've unplugged something from the usb even though everythings still plugged in. once it does that the phone is no longer charging and I cant see the hard drive anymore until I unplug and replug it back in. then it does it again within a minute or two. Anyone seen this happening to theirs?