Interseting point about IE.
All the loadbalancing is going across separate instances of aolserver on the 1 linux box with multiple IP addresses. Aolserver has much better performance with fewer threads and fewer db handles.
I was observing this behavior with just two such instances. Right now there are 7. While this might be ther problem I am not sure. I am planning on instrumenting ad-html to make sure this is the case.
-raj
