It seems that udev-073 reports the device(/dev/sda) instead of the partition(/dev/sda1). This bug is to ensure that udev-073 does not become stable at any point. We have reports of later versions ( such as 075 ) working correctly. Perhaps 073 should be masked? Please see the bug in the URL. Thanks!
*** Bug 113724 has been marked as a duplicate of this bug. ***
077 is released, so please try that.
*** Bug 115060 has been marked as a duplicate of this bug. ***