I've dealt with it aswell. I turned down my acceleration a few notches, haven't seen it happen since. Of course you have to use SETSYS (Unlocked Mach), instead of the one Tormach gives you to use... Look in your tormach install folders to find it. or search. I run my tormach around 150ipm, I went to path pilot and couldn't' stand how slow it was, had to go back to Mach and deal with the small quirks, plus with Mach you can have Dropbox...