Glad you're less clumsy than I am. :-)
The accidental pasting definitely kept happening to me, likely due to my bad habit of highlighting sections while to focus on them.
I'm guessing you have touchpad corners enabled. Usually by default lower-right is 2nd mouse button and upper-right is 3rd mouse button (middle click).
I only use the touchpad, but knowing where it is I can avoid it and almost never trigger it accidentally. It can also be disabled without affecting two-finger and three-finger tap, which I do use.
(This applies to all laptops, not just Thinkpads)
> I'm guessing you have touchpad corners enabled.
Er, no. As I said:
Usually I leave the trackpad disabled. I don't like gestures and multi-finger taps much so I prefer to just turn it off.
Ah, I meant to respond one comment above, to https://news.ycombinator.com/item?id=47886430
From where I sit I have 5 Thinkpads set up within reach, and I have a few more in other rooms. They are by far my preferred laptop.
Most run Ubuntu as their default OS, most have the trackpad disabled because I usually use the trackpoint for everything, and on all of them I use middle-click to paste extensively.