|User since||April 14, 2011|
|Number of add-ons developed||0 add-ons|
|Average rating of developer's add-ons||Not yet rated|
Firefox 4 Rated 5 out of 5 stars
For all worrying of compatibility issues in Firefox 4 : you don't need this extension anymore.
Go to "about:config" in your address bar. Search for "ui.", then turn the "ui.use_native_popup_windows" key value to true. That's it. Enjoy your plasma notifications again.