Rated 4 out of 5 stars

Works with FF4.0b12pre so that's good :-)
Was able to just copy all my 3.6 scripts over to my 4.0 profile.
The new scripts show in Add-ons under User Scripts.

The ability to easily add www.example.com* from the manager has been lost though :-(

Its going to be a pain so I will keep FF3.6 around so I can create the script from Platypus and save in the old Greasemonkey. Then I can use the old manager to update includes.

I may just provide a link to my FF3.6 profile actually hmm will have to investigate if that will work correctly under Ubuntu.
Anyway nasty workaround or not this was one of the last "must have" add-ons that were stopping me moving to FF4.0 full-time. so worth the aggravation ;-)

Deducted 1 star as the Manager needs improving.

This review is for a previous version of the add-on (