[ubuntu] USB Drive Blinks Constantly on EXT4 Format

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http://ubuntuforums.org – This is an odd issue but I thought I would ask here before going to a bug report. I've got a new WD Elements external USB 3.0 1TB drive (WDBPCK0010BBK). I'm running Ubuntu Precise 64bit with 3.2.0-23-generic kernel. It works fine, but when formatted as ext4, the drive light blinks constantly at approx 2x /sec even at idle. This happens whether it's running through USB 3 or 2. Any other format I've tried (NTFS, ext2, ext3) and the light is constant at idle, just as it should be. I'm wondering if anyone with more intricate knowledge of the Linux formats might be able to think of a reas (Hardware)