EDIT 1/29/2009: This thing just totally saved my data. My PC crashed over the weekend and wouldn't boot up even after I ran the Windows XP installer in Repair Mode. It just kept rebooting over and over. Fortunately I had backed up my Windows drive to the Linkstation and was able to restore it back to its original location, now everything works fine again! Totally worth the purchase price.
I've had my Link Station Pro Duo for a few weeks and I've found that it gets the job done that it was made to do: stores data over the network.
The NAS comes with two pieces of software:
Memeo backup - Absolute garbage. I let it run for two weeks straight and it never finished backing up my 52 gigabytes of data. It's also not capable of backing up open or locked files even though Windows has had Volume Shadow...