Just after the release of WP3 I was using a older W3-TC version that did not support network wide setup and even was not working on multiple blogs when I used the single activation (each blog with its own W3-TC).
Then I did migrate to version 0.9.1.1 and everything is great, although I am still afraid of turning on the network wide option. Each blog still has each own W3-TC at the moment.
Is it safe now - on this latest version - to use the option NETWORK WIDE? I am really afraid to mess with the sites of my employers...
Any advices on updating the plugin? I am using now the version 0.9.1.1. I have two blogs, and each blog has it's own W3-TC activation. To automatically update, I need to turn the plugin OFF in both blogs before starting the process? Or should I just perform the operation with no worries, starting from any blog panel?