There was some sort of controversy back when that the Kinde might not have been using Vizplex when it first came out. If that is true, then it's possible you have one without the Vizplex screen. If you are in the USA, take your Kindle to a SonyStyle store, Target, or Borders and have a compare of the screen to the Sony Reader PRS-505.
But as MonaLS suggested, maybe you are using the Kindle in the cold. When Vizplex gets cold, it will get sluggish.
|