It's some sort of a strange bug that only occurs at 233Mhz speed, even if your CPU is overclocked to 233Mhz (e.g a real 200Mhz 604e). The latest WarpUP v5.1 carries a built-in solution for it, so as long as you run this version of WarpUP, you should be fine. That's all I know. For more details, I hope that someone else can advise. :-)