I'll add my vote(?) to this.
1: Installed the driver for the programming port. Worked "out of the box", ie. with updating the driver and pointing to the 1.5.1/driver library. Programmed the blink sketch. All OK.
2: Moved the cable to the native port. No driver was found/installed. Tried the fix in the other driver thread. It now started an install, but BSoD.
2b: After reboot, whenever the Due is plugged in with the Nativeport the machine BSoD (presumably trying to reinstall the driver)
Win7 Enterprise, 64bit, SP1 (intelCore i7, dual core M620)
Edit:Update:
Well, after 3 tries, it now no longer BSoD, but the driver does not create a COM port and is marked "not installed". Installing has no effect "The driver is installed and uptodate".