I recently purchased a Lenova Yoga, which is a laptop - tablet hybrid (an article for another time). I am quite happy with it, but have been rather annoyed with one "feature."
While using the touchpad, what seemed like for no reason, the screen would switch to the last program I was using. I finally discovered it was caused when I moved my finger to the right on the touchpad -- which is common when moving the cursor. I move it right, I move it left, I move it up, I move it down... you get the idea, we move the cursor on the screen, because that's how it works.
I found the device properties, and learned that this was a "feature" of the touchpad. A left-to-right movement from the edge of the touchpad is an indication you want to see the last program used. Simply disabling the "Edge Swipes" feature solved this annoyance.
By the way, the same feature exists in Windows 8 for touchscreens. I find this to be a great feature, and use it frequently.
For you geeks or geek wannabes...
Lenovo uses a reduced set of functions of Synaptics touchpad technology.For those who want all the features of Synaptics touchpad, I found a well put together reference from djklmnop on the Lenovo forums. See the 4th post on this thread. In the post, djklmnop has inserted a link to a file where he's included a wealth of helpful information based on a lot of hard work on his part.