It should say “served by advanced cache” at the bottom of your source.
FYI: no, it does not, just the timestamp.
I’ve downloaded 2.0.6. It works fine.
Thank you very much, Sir.
Thank you for such quick response.
Unfortunately, the plugin seems to be broken now.
It regenerates a page in cache every time it is requested (debug timestamp at the end of a page changes on every request).