Though there's no way of complaining but i've heard that the 4GB ram & the HDDs which has been used in Dragon aren't of high quality.It can be determined by the Vista Experience Index Memory & HDD scores.They should've used 7200RPM drives though & some Corsair or Micron memories.
Here's a screenshot of Vista Performance Index for all vital parts of Dragon ( taken from a review linked below) .
There's a great review of Dragon if you've not seen it yet.
Link :- BostonPocketPC - Review of the HP Pavilion HDX Entertainment Notebook aka the Dragon