I have installed pinstripe twice and it keeps adding my primary Linux partition with LABEL=/ for device file in /etc/fstab instead of /dev/hda6.
If you are doing a new install then an /etc/fstab will be created using labels instead of the actual mount device name. This makes it possible to properly boot when, for example, SCSI drives are added or removed to the chain and device names change. If /dev/hda6 is mounted as your '/' mount point then this is the correct behaviour. You can always hand edit it to say /dev/hda6 instead if you feel more comfortable with that. Using labels is going to be the default on all new installations.