Just an update from my last post. I recently updated our Moodle server to the latest 2.3 version and increased eAccelerator's cache to 128MB and still using 0.9.6.1 we noticed a huge increase in performance from the quizing standpoint. Before the change the average user click to the next question was 5-6secs and now it is at 1-2secs. This was with a total of 141 students taking a timed quiz. It fabulous! Im thinking of increasing to 256MB to see how many more scripts we can cache. One pointer for anyone make sure you increase your kernel shared memory before you increase eAccelerator's memory.