Ongoing problem with CS2 Photoshop

Question

My problem is is not a new one. I've been struggling with it for ages; it just seems to be getting worse recently.
The projects I work on often call for close-up photos of products or people. Rather than fiddle with the backgrounds, I've found it more time-effective to focus on the subject and either eliminate or replace the background, as needed. To achieve that, I usually just trace around the subject with the polygonal lasso tool . . . remove the background and add whatever background I want to a second layer.
I don't know what I've been doing wrong, but for some reason, the image I'm working on has always jumped around a bit; but now it's happening so often, it's almost impossible to complete projects. (And don't talk about frustration. I have to keep the windows shut so our neighbors' kids can't hear my responses.)
At first I thought image were just jumping around on the PS page, but realized recently that actually the screen is jumping back and forth between PS and the desktop.
I have considered it might be a problem with the mouse (not software), but it only seems to happen when I use PS.
Ideas or suggestions, anyone?

Answer 1

c,
As this appears to be a Photoshop-specific issue, why not post in the Photoshop forum for your platform where those experts hang out?
Thanks!
Neil