Rated 4 out of 5 stars

Version 2.0.1 works otherwise as supposed to, but after installing, message-headers doesn't show up at all - user needs to do some toggling first (which takes one star away).

With quick-check I didn't find anything "phone-home"-related in the code. Altho, I didn't look thru all the localization files.

@Cobratek:
User isn't supposed to "figure out" something that's not proper behavior. Like why their message headers are missing totally. It's a flaw in the addon, which should be *at least* mentioned clearly somewhere - without forcing the user to read something like user comments. (I personally hate it when coder/experienced user fails/denies to realize that not all of the people are as they when it comes to experience/logic levels)