Just installed W3TC and it seems to be working fine. However, I noticed it inserted this text "CACHED !!!" above my recent comments widget. I'm using the the Wizzart Recent Comments widget inside the Tabber Widget in my sidebar.
Even if the comments are cached, it doesn't seem appropriate to be announcing that to the site users, particularly with no control over what text is displayed. As it happens, the site I manage (http://www.informacjeusa.com) is in Polish, so this isn't even the correct language to display.
Can anyone tell me how to turn this off, or at least where to find it in the plugin php files so I can translate it?