We recently purchased an HP 3134. The cursor constantly moves from the position it was in, randomly moves on its own and is very hard to position (once you have it where you want it to be you go to "click" and it has jumped to another location. Very frustrating.

wireless mouse batteries are weak
if not wireless and or batteries in mouse are fresh
the mouse is bad. bad buttons happen.

what OS do you have and is this a laptop or desktop? Hard to answer without knowing what you are using.

Reinstall drivers. Did you droped your lappy recently ? Have it checked in service !

I had the same problem and it was driving me insane - then while troubleshooting the problem I noticed that the bluetooth support service was disabled. I started the service and set the startup type to automatic - that solved the problem for me - no more freezes!!!

registry is corrupt...
clean registry...use Tuneup Utility
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i have the same problem with my HP Pavilion DV4 they were unhelpful on the phone about it. It's been happening with this computer since I bought it. The cursor will just jump around randomly for a few minutes being unresponsive. Then go back to normal.

Are you sure that you are not accidentally rubbing against the "touchpad", which would cause the cursor to move?

Cursor moves randomly - we call cranky mouse .

1) Go to control panel.
2) Select Mouse option.
3) Select Pointer option.
4) Set motion medium.

On my acer all I have to do is press function F7, Function is the button with 'Fn' on it. I am not sure if that works for HP, but its worth a try. Also, is there a switch near the touchpad? Sometimes there is one that switches the touch pad on and off. You can also try other Fn(function) F1 or Fn F2 etc. and see if one of the other "f" buttons work.  I hope this helps, let me know how you made out. Good Luck!

the problem is where the mouse cursor is. When you begin to type have the mouse cursor as far down the page as possible the glide pad can pick up the slightest variant of pressure and move your text to the position where the mouse cursor is.