I have a new one, I have recently started having a problem with one of my machines changing the tool path files as they are run. the only thing I have changed on the machine recently was a new smooth stepper driver, but I am more inclined to think the computer itself is having issues. just thought I'd make sure there were no known issues.

Only other time I had anything like this was when I had a computer go under water in a flood. After I hosed the mud out of that one and put in a new power supply, I ran it for a couple more years, but the hard drive had been corrupting some of the data writing sos's as it went under.