At our department the PCs are being upgraded to Fedora Core 2. After my PC was upgraded and I started Gimp, I noticed that the mouse now moves in steps of at least 2 pixels. It is impossible to make the cursor move by a single pixel. If I draw a shape with the pencil, it looks totally jagged, unless I zoom to 2:1 but that's not quite practical.
I tried changing the mouse settings in the Gnome preferences but I can't get rid of the 2 pixel step size. It also happens in KDE so it must be some setting of the X server. Where can I change this behaviour?