MMCache Benchmarks don't show much improvement?

Hello, I installed MMCache on one of our boxes here and did a few timing tests. I have to say I'm very unimpressed given the hype and the benchmarks on their servers. Am I missing something? (and yes, phpinfo() shows the module is loaded). I was the only person hitting the pages on this test box. For the smaller pages, I would'nt expect much improvement, but I would expect for the larger loading pages to see at least SOME speed increase... I have removed the URL's since you couldn't get to them on our LAN anyways... But the values are fairly accurate (as much as a stopwatch, my fingers and my eyes can be) ---- PHP v4.2.3, Apache 1.3.26, Zend Engine v1.2.0, Turck MMCache v2.3.23 ENABLED: 2.5 seconds DISABLED: 3.0 seconds ENABLED: 1.5 seconds DISABLED: 2.8 seconds ENABLED: 26.0 seconds DISABLED: 26.5 seconds ENABLED: 3 seconds DISABLED: 3 seconds ENABLED: 3.5 seconds DISABLED: 3.5 seconds ENABLED: 7.25 seconds DISABLED: 8.0 seconds ENABLED: 1.75 seconds DISABLED: 2.75 seconds ENABLED: 5 seconds DISABLED: 5 seconds