I just bought a 2 TB Samsung G3 station external USB 2.0 hard drive. The drive is working fine, however when I put my computer to sleep, upon waking it, I am instantly greeted with the red exclamation mark message saying "The drive was not ejected properly". The drive seems to be unmounted at this point, as it does not appear on the desktop. To get it to mount again, I have to unplug it and plug it back in. In Energy Saver, I have unchecked "Put Hard Disks to Sleep when Possible", but it doesn't help. I'm suspecting that my Samsung external simply powers off completely when I put my Mac to sleep, and even if it does power back on when I wake it, it's in an ejected state for some reason. I also have a WD 500 GB MyBook Essential drive, which is USB 2.0 as well, and that does not have this issue at all. When I put my Mac to sleep, the light in the drive goes off and it spins down (I can hear it) and it spins right back up when I open my Mac, and there are no problems with ejecting and it being unmounted at all. My Samsung drives also seems to power down when I put my Mac to sleep, however, it seems to power up just fine when I wake my computer, but the computer thinks otherwise. Any help would be greatly appreciated! PS: I'm running Lion and I have never tested the Samsung on anything else.