AFD.sys Memory Leak

We are developing a servlet that is running within Apache Tomcat. The
connections/sockets it uses are non-blocking. We are simulating heavy
loads using approximately 200 simultaneous users.

All of this is running within Windows Server 2003 SP2.

Over the course of the test we notice that the AfdP driver is consuming
kernel memory at a rate of 900KB per hour until the kernel memory is
exhausted (approximately 285 MB) and the system hangs.

Has anyone had experience with this sort of problem with other web servers?
This same scenario actually runs with no memory leaks on Windows XP Pro.

We have tried a number of tweaks in the TCP/IP registry as well as the AFD
registry settings.

Any help would be much appreciated!