Hi Mario, thank you for your reply, but none of these pieces of action were helpful.
My machine is clean and kept clean, I use only the supplied power cord.
I know my gestures 😀
This machine with Mountain Lion and earlier Mavericks has been a flawless workhorse.
I've tried Safe Mode, the problem persists.
It's really as simple as that the trackpad does not really 'control' the pointer very well at all.
Often, for about 30 seconds at start up or out of sleep mode, it works just fine and then, almost as if a different system process starts, it goes wonky.
The pointer moves slow, inconsistent, strangely, and will do swipe gestures when not swiping. It will magnify the window without the proper gesture.
It's like it is 'misinterpreting' the gesture.
The thousands of messages on on these forums about this type of problem seem to suggest that Mavericks causes this problem on some of the older machines. Is it not somewhat obvious that there are some issues with the relationship between the trackpad and with both Mavericks, and Yosemite OS.
?? because I don't see a lot of those other messages with a green check??
What do you think?
thanks, Derick