The main ticket system for commuting in Stockholm uses touch screen devices to purchase tickets. But when you "touch" a button on the screen, there's a several second delay before anything actually happens on screen. Yes, it's that bad.
So most people hammer on the screen in vane and then all of a sudden the screen moves several steps forward, having stored the previous touches, selecting whatever options where on that location...
...after a few months, they updated the ticket devices to provide a beep sound on any registered button press. That reduced the aggravation by a lot. They're still very unresponsive though, but at least now you know when you've managed to press a friggin button and know to wait a few seconds for the screen to update.
Haptic feedback is also important, compare a touch-typist typing on a real keyboard and an on-screen keyboard. The feel of actually depressing each key, the visual indication on your screen and the sound that's made by hitting the keys all help to provide a rich and intuitive experience typing quickly and accurately.
In my opinion, the beep sound is a poor but better-than-nothing substitute for haptic feedback as to not leave the user completely in the dark.
The question is interesting though because the "new" touch generation doesn't seem to actually care or be bothered by ergonomically sound (pun not intended) design. Everything should be a touch screen with nothing but visual feedback, if you're lucky and the underlying operating system can keep up with your interaction with it. I feel old whenever I discuss this with people of today - so I feel it's interesting because maybe, perhaps, I'm just plain wrong and typing on a touchscreen keyboard with limited feedback will be orders of magnitudes faster than oldschool keyboards, and I'm just not re-learning quickly enough? ^^
(though I'm hoping it's mainly a design decision to reduce costs, like stoves with completely useless touch keys must be much cheaper to produce than stoves with actual dials you can interact with, and also induce less maintenance costs. However, there's seldom a "high-end" stove interface to choose :7 I've dabbled with doing an article on stove interfaces, they look all the same but the touch button arrangements differ so one stove could require 3 touches to setup for a dinner, and another 27 presses for the same setup)