Jos,
>Is it the consensus of UT members that VFP9 definitely has no issues with hyperthreading cpu machines? I am just trying to get a definitive answer because I have read about other applications having problems with hyperthreading cpu machines. Just looking to be sure before giving the client a categorical answer :)

I would phrase the answer differently<g>. There were issues with double core machines known, most of them in the area of power saving states different in each core. Some of them persist today. Also the high perf counters are often not synched, so anything working of them is untrustworthy (I was bitten there, restraining to use 1 core helped <g>). HT was definitely slower in some SQL/PostgreSQL server machines on multi cpu machines and sometimes single cpu machines.

HT cpu's also were at the time of introduction running very hot. I was bitten by probably temperature induced failures on an old 90nm 3.2 GHz HT cpu - on this machine I got errors not seent on Athlon's and a 2.4 PIV. The system was overheating during 5H of full cpu usage- running in winter with an open case I could finish without error. So ***some*** HT cpu's may be more prone to temperature errors.

All in all I think Walter's suggestion of running under coverage is a very solid next step - perhaps with opened computer case and room window. To make sure it is not a pathing issue coupled with menu I'ld also add filemon into the tracking part<bg>.

regards

thomas