jumpy

I successfully installed Yosemite but I am having a problem. My mouse moves slowly sometimes... It's like the computer is getting the signals from the mouse late so the cursor moves with a delay and jumps. Do I have the wrong mouse driver or something? How do I fix this?

I'm trying to install Yosemite on my laptop but my mouse is all over the place on it. I move my finger on the touchpad to one corner to the other the cursor will instead go all over the screen. Did I do something wrong when making my usb ??? (This is also my first time installing Mac on a Intel...

Hi, I have a iogear usb bluetooth module connected to my Gigabyte DS3H/I5-2500K based system, and it generally works great, even allowing me to wake from sleep, with no drivers needed. However, I've done something twice so far, not sure what, that mucks up the connection to my trackpad and...