Nvidia would not have known about this, as they would'nt know of all the new distro's poping up here and there. But it's good that it worked. Kernel Version 2.6 will yet be another story
Well, I guess that being a fresh install as you mentioned, all your shares will have to be recreated. OR, you could copy them from a backup of the old system.
Also checkout the fedora forum, others maybe able to help you in that area.