I have a Dell Latitude D600. I find that while typing my mouse moves to the bottom left corner of my screen while I type, and then it moves to the top right. I have to mash the touchpad for quite a while before it stops moving on its own. The problem then immediately comes back as soon as I resume typing. I am definitely not touching the touchpad while typing, and it even happens when I rest my fingers on the keys of the keyboard. I have tried disabling the touchpad from yast, but that has no effect. Could commenting out the synaptics section of x have any effect? I have a usb mouse that I use most of the time, but the problem persists whether it is attached or not. I really can't decide whether or not this is a hardware or software problem, but it is really starting to irritate me.

Thanks for any help!

Try changing
Replace "AlwaysCore" with "SendCoreEvents".

You could also try disabling the touchpad in the BIOS.