How strange.. It did not post my reply last night..

Laptop John.. pretty basic one, P3 600Mhz with 384Mb ram.. Am running the basic 3 axis screen from Mach website (75% less processor usage) and have had everything running fine a few days ago.. But this weird problem cropped up when I was cutting some mdf mounts for my router.. The circle cutout was not exactly circular and dimensions came out very strange.. When I jogged it I noticed the different speeds I was getting at different directions of the same axis..

Just fired it all up and the problem persists.. Have a fast dual core desktop pc in my house, but it is a bit of a brute, especially the huge monitor.. Will haul it all into the workshop and hook it up if you think that is my problem..

Steve..