Debonair -
I have experimented with the time zone settings and haven't been able to reproduce what you are seeing. I am suspicious of the Daylight Savings option being the cause of why it went from being one hour off to being two hours off for you.
I am posting this messages at 11:15AM CST (GMT -6). If my calculations are correct, it should show up as 11:15AM + 6 + 8 = 1:15PM for you if you are GMT +8. Is that right?
Thanks!
Molly K.
Web Support & Operations Manager
National Instruments