MJ works well most of the time. I did all the hacks on this site... but the Voicemail service is not available (been out nearly a day now)... and the magicfix page shows everything is in order except it can't communicate with my MJ so I have to download that stupid UPGRADE file.
Overall I'm satisfied. Added the 5 year code from my email to my MJ account and the page refreshed showing I'm good til 2013... although I hear the world is going to end in 2012.
That Magicfix error about not communicating with your mJ seems to be bogus. Mine gets that error, but it works fine, so I wouldn't worry about it, unless your mJ stops functioning.