I'll echo the sentiment except from the windows side. I had the mozy pro deployed on 5 users laptops that were frequently connected to 100mbit internet connections. I never was able to get all 5 machines to continue to backup on their own. I constantly had to force the backups, add more resources (even though it should have auto purchased more storage), and deal with users complaining their computers were much slower.

The worst part was the outlook archives, large multigigbyte files it would try to compress and encrypt without splitting.

We use jungle disk now, nobody notices it and it works.