Two or three times now, when I have been testing on my fedora 13 partition, and used the shutdown button from a f13 gnome session, when I've booted back into fedora 12, it has found the fedora 13 partition needed orphan inodes cleaned up.
I thought the shutdown button was supposed to induce a clean shutdown? What's with the journal problems?
I suppose it might be a good idea to report this as a bug, but I can't even imagine what to report against - kernel?, gnome?, upstart?, something else?