When I type on my MacBook Pro, I tend to rest my palms near the trackpad - and sometimes they end up touching the trackpad directly.
As a result sometimes I end up moving the mouse around while typing. The worst is when it ends up highlighting text I've already typed, then I end up typing over it. This happens a lot.
How can I reduce the trackpad sensitivity to touch? On Dell computers the mouse utility actually lets you adjust this. It's a setting like "TouchGuard" or something, and if you turn it up this problem won't happen, though there will be a noticeable delay when you try to actually use the mouse.
I cannot find any similar setting on my MacBook Pro. Maybe there's a 3rd party utility?