It seems to have fixed my trackpad issues. Ever since I got my SB, the trackpad barely worked - I could muddle along if I absolutely had to, but I had to turn off two finger scrolling (I generally needed to use two fingers just to get it to respond). MS looked at it and found nothing broken, but couldn't fix it. Since I use it as my work PC with an external KB and mouse, I didn't pursue a fix. Ever since this last update, it works as it should, and I can use two-finger scrolling again.