CS4 Bug, does anyone else get this?

[ElectricMainline]

Hi, I've been struggling to use CS4 for a while now but its got to the point where Im getting too annoyed! It seems sometimes the callibration of where the mouse is goes haywire. Say im using the brush tool, I'll paint one line and it will do it properly. Then I'll paint another line and it will appear in a completely random place. As if it thinks the mouse is in a different area of the screen. This happens with the burn tool, selection boxes, everything, and completely at random. As you can imagine it is very hard to work when you have to keep undoing things and doing them again.

I've uninstalled it and re-installed it but it's still the same.

Anyone know what I can do?

[artd]

Just kind of guessing here but...Photoshop CS4 leverages the graphics display card's GPU, instead of the computer's main processor to speed its screen redraw. For Photoshop to access the GPU, your display card must contain a GPU that supports OpenGL and has enough RAM to support Photoshop functions.

Try this: Go to Edit > Preferences > Performance (for Windows) or Photoshop > Preferences > Performance (for the Mac) and uncheck "Enable Open GL Drawing". If that solves the problem you may want to update your display driver to one compatible with CS4.

[ElectricMainline]

Thanks artd, I've done that and it seems to be working so far. Only thing that puzzles me is that my NVidia card says its Open GL compatible and the driver is up to date. ah well I'm not too bothered about that