>To be correct, there is only one thread per apartment. The MT in MTDLL is accomplished by having multiple apartments and thus multiple threads. In practice, I've seen vfp web apps efficiently re-use the same threads/apartments so marshalling and all the associated overhead is only likely to be a factor is your running an extremely busy site like a google or amazon..

Joel,

Thank you. I stand corrected.

However, I should note that VFP is not mult-threaded. Using multiple aparments is a workaround for this.