ff5 compatibility update (link fixed) Rated 4 out of 5 stars
You can do that yourself - just fix the manifest (since no code change is required for FF5).
But here is the fixed extension http://www.sendspace.com/file/n1jl4f (my bad! link fixed)
Btw, I hate that Mozilla messed the version numbers up :(
my previous comment:
OK guys, since no one was going to fix that addon for FF4, I did it myself. here it is: http://www.sendspace.com/file/6lku3s
Should I upload it as a separate addon here?