You must really believe it if you posted it twice :rolleyes:, but I'm sure if you search HP or Lenovo, you'll see similar complaints. Plus if you look at how many computers Dell sells in comparison to the others the percentage of complaints is probably proportionate, if not less than other manufacturers.
But speaking from personal experience, I have a Dell desktop and laptop that I've purchased from the Dell Outlet within the past two years and have had countless friends buy systems from Dell and haven't heard of any major issues. There will always be lemons, but that's not exclusive to Dell.