The problems with the touchpad are not unique to Lenovo, but given that Lenovo's got this hardware branded as thinkpad quality, I think they really need to work on it.
As of now I'm literally afraid to use this for work, because the touchpad so often decides that what I want is for a tap to be read as a click. I never, ever want a tap to be read as a click. I never want to send an email I'm in the middle of drafting because I touched the trackpad to move the cursor, but hit it just hard enough that it was interpreted as a tap. I never want to commit a command in a web gui or close a remote session without actually pressing down hard enough to force a click by the pad.
Today I noticed that the right-click function on my pad was coming and going, and a driver rollback seems to have cleared it. I had updated to the Dec driver release hoping that the driver would remember my preference for disabling tap to click. The Dec driver is just as bad.
When I first researched this I found numerous people asking Microsoft to address it on different platforms, and some recommendations to go download the driver from Synaptcs, etc.
Been there, done that, it did not resolve the issue.
https://www.google.com/search?q=tap+to+click+synaptics+won't+stay+disabled
The problem is acute on the new input devices Lenovo's gone with, though, as they no longer actually have buttons other than the integrated ones. I think this is why there's no option to disable the trackpad in the BIOS as there is on a proper Thinkpad.
Also, although the ultranav control panel indicates that it is capable of registering a middle click at the top center of the touchpad, I have never, ever been able to get that to happen.
Not being able to disable the touchpad in the BIOS makes this hardware extremely challenging to run Linux on except in a virtual machine - it's possible that there are Linux drivers for the pad that make it more manageable, but I haven't been able to get far enough along in using the system when booted into linux to try to install them, as it's so twitchy - palm rejection doesn't work at all so I'm constantly finding the system receiving random touch commands.
The new touch panel is nice for certain things and required for at least one. I wish I had understood how poor this implementation was before my purchase. I do like the ultranav better than the touchscreen or the trackpoint button for some things and if I'm going to get a middle click the only way I've been able to do it is to enable the three-finger click function, which requires the ultranav be active.
I will have to try to unload this on Craigslist at a loss.
It looks as if the only option available from Lenovo with proper buttons in a lightweight touchscreen model is the Carbon Touch, and it looks as if the CT is the last of the line for now and possibly forever with separate buttons and touchpad. The 240, while superior in a lot of ways has the same integrated trackpad.