Yes, same here. The other threads of setting MaxRequestsPerChild to a very low number like 20 or 30 seem to apply to Linux systems. What this does is restart a new thread which is different in Windows. And it may be at this time that instability is happening. Setting it to zero means that this never happens. But we should watch to make sure that connections termnate, which one can do by setting up the server-status feature in Apache.
Good luck and let us know if this works.