You either need a new keyboard, or an new person sitting between the keyboard and the machine.
I’ve been using Windows 8, from the developer trials to the present production version, and, nothing even remotely close to what you claim to be a problem, has come up.
Perhaps you need to clean your keyboard and remove all the food crumbs between the keyboard keys. At the worst, what you might need is a new keyboard. But, you don’t need to blame Windows 8 for what is apparently, hardware related.
While it’s true that my keyboard may have a few crumbs on it, and while it may be true that a good cleaning is overdue, you have mistaken me for the original poster, who you have also insulted with your condescension.
A plea for help is not an invitation to ridicule,
That’s just silly, this behavior would have nothing to do with a dirty keyboard or the person using it, and you shouldn’t give advice like that if you don’t know what you’re talking about.