@Alex : I am skilled enough to know the truth about this plugin, thank you. Every user knows the configuration process isn't easy for basic users just to sell the W3 service. But this is not the problem ... the problem is WHY DO THEY RELEASE A BUGGY VERSION ? Can you reply to this point Alex ? When you are responsible, you take the time to test, not only to work ... and you apologize when you do something BAD.
that's not because the stuff is free (but not totally, a free plugin doesn't offer a pro version or pro service) that you can do silly things like release a version full of bugs, even more when your plugin is popular and you made your reputation telling supercache wasn't so good than totalcache.
@Morris : I can find you several test on Google who tested the combo hypercache + dbcache reloaded which is working great especially for underpower server ...