>Hey John,
>
>Does it solve the problem by making an occasional (say once every 1000 >iterations of the loop) DoEvents() call inside SlowHit()?

I have not tried that.... but give me a second..

Okay... DoEvents does seem to work.....sometimes. On a few occasions, processing would hang. At other times, the call to DoEvents had a major performance penalty. Also, I am curious what issues arise when calling a DoEvents in the MTS environment. The more I run the code, the more unstable it gets. So, it does not look like DoEvents is a viable alternative.

Bummer..