I tested WPSC few yers ago and was dissapointed. It simply broke my page. Since then until now I was using W3TC, which honestly didn't make any difference to my site(s), just was working without noticable effect (in every configuration possible). Now I tried WPSC again, and what I see is absolutely awsome. My site is like new born baby with rocket in back. Magic! You did outstandig work since my last encounter with WPSC, whoever you are. Thank you!