Well it's interesting that FPW2.5 works OK.
I note that one of the very first things mentioned at the top of the fixes for SP3 and also SP4 now is a fix for 16-bit apps that can't handle fast CPU's.
I wonder if Microsoft have moved this fix from FoxPro to Windows 2000 without realising the impact of doing two fixes?
It could be totally unrelated to this, but it is a possibility.
I wish someone from Microsoft could comment on this.
Regards
Simon