A while back we talked about upgrading plugins. Specifically the All-in-One SEO pack and the controversy surrounding how it turns it self off after (some) updates. This is what that plugin looks like when it needs an updating:
But W3 Total Cache also needed an upgrading, and this is what it looked like...
This plugin clearly explains why upgrading would be a good idea. I like it. I think this should definitely be employed on plugins, especially on updates which may have seriously implications on your sites performance.
Oh and look, it doesn't bug you with all the notes if it isn't activated: