The clear coat on my 1992 SE-R started to show damage in '97 and now is in really bad shape. The areas effected are the hood, roof, trunk, spoiler, and c-pillars. The roof is so bad that the grey primer is showing in some places.
The one thing that tells me this was a factory defect and not a question of the elements is that the paint had worn (since back in '94) away from the gutter areas under the hood and trunk. These are places where the hidden for the most part from direct sun light.
I heard about the problems other '92 and earlier Nissan owners had with their paint. I know a few were lucky enough to get their cars repainted by the dealers, thought that was the exception. Most, like myself, were out of luck.
I've endured the ugly "sunburned" appearence of my car for too long and will most likely get it repainted sometime soon.