I had one of the "afflicted" models at a previous job. When I was issued my initial laptop the spacebar was completely inoperative. The key was stuck and wouldn't move up or down. I remember describing the issue to the company IT tech and watching as mentally they just checked out and started reciting a speech about how all they could do is try to use compressed air to blow out anything under the keys. It wasn't until I explained this was a different issue that any sign of life returned to their face.
D'oh icon because it's pretty close to how the person looked when I said I had an issue with the keyboard