0.95 still cannot run stable on my dual Xeon system ... It would freeze and I have to kill the process. WinTest v0.6 works fine on this dual Xeon system though. I could use WinTest to monitor fan speed and temperatures just fine. I can also put out temperature and fan speed readings on the LCD display for an extended period of time without any problem. Whatever you did in Win Test (I suspect it's the serial I/O routine), it makes difference. Could you look into this? Thanks.