I believe i posted the original instructions for jailbait, i can also offer the image if anyone is interested.
I am also interested in upgrading my kiosks to midori, maybe we can start working on this together, if there are enough people to help.. some main issues:
1) install ssh/sshd/netcat (to be able to control / upgrade software remotely)
2) disable the configuration pages on localhost
3) disable console switching
4) make sure that X can't be closed.
5) load opera without windows manager ??? (unless you want to keep IM, EMAIL, ETC)
well, i think that is about it..
let me know if more people are interested!