|User since||June 23, 2011|
|Number of add-ons developed||0 add-ons|
|Average rating of developer's add-ons||Not yet rated|
Rated 5 out of 5 stars
To have plasma notification again go to about:config then turn the "browser.download.manager.showAlertOnComplete" key value to true. restart firefox !!
I tried with Firefox 5.0 and it works !!!