Those who bought Borderlands on the PC discovered an unpleasant truth, namely, that Gearbox hated PC users and wanted them to die. Not only was the computer version of the sleeper hit a poor port, it had next to no support to make up for its many problems. That seems to have changed with Borderlands 2. Take a look at this love letter from Claptrap. Joystiq has the story.
If only the original Borderlands was up to snuff on PC, Gearbox might have had enough extra sales they could have afforded to make Duke Nukem a fun game.